brazilian wandering spider price

Brazilian wandering spiders: Bites & other facts

The spider's name means "murderess" in Greek, which is appropriate for the deadly arachnid.

Classification/taxonomy

Size & characteristics, bites and venom, additional resources.

The Brazilian wandering spider, also called armed spiders or banana spiders, belongs to the genus Phoneutria , which means "murderess" in Greek. And it's no wonder why — it's one of the most venomous spiders on Earth . Its bite, which delivers neurotoxic venom, can be deadly to humans, especially children, although antivenom makes death unlikely.

Guinness World Records has previously named the Brazilian wandering spider the world's most venomous spider multiple times (though the current record-holder is the Sydney funnel-web spider, Atrax robustus , according to Guinness ). But, as the late Jo-Anne Sewlal, who was an arachnologist at the University of the West Indies in Trinidad and Tobago, told Live Science, "classifying an animal as deadly is controversial," as the amount of damage depends on the amount of venom injected. 

Jo-Anne Sewlal was a noted arachnologist from Trinidad and Tobago. While completing her PhD, she received the National Institute of Higher Education, Research, Science and Technology (NIHERST) 2012 Award for Excellence in Science and Technology for Junior Scientist. In 2013, She received a doctorate in zoology from the University of the West Indies. She discovered several species of spiders in her home country, surveyed the arachnids across several countries the Caribbean and appeared as an expert on the topic on The Science Channel. She died of an allergic reaction in January 2020.

There are nine species of Brazilian wandering spider, all of which are nocturnal and can be found in Brazil. Some species also can be found throughout Central and South America, from Costa Rica to Argentina, according to a 2008 article in the journal American Entomologist . Study author Richard S. Vetter, a research associate in the department of entomology at the University of California, Agriculture and Natural Resources, wrote that specimens of these powerful arachnids have been mistakenly exported to North America and Europe in banana shipments. However, Vetter noted, in many cases of cargo infestation, the spider in question is a harmless banana spider (genus Cupiennius ) that is misidentified as a Phoneutria . The two types of spiders look similar.

The taxonomy of Brazilian wandering spiders, according to the Integrated Taxonomic Information System (ITIS) , is:

Kingdom : Animalia Subkingdom : Bilateria Infrakingdom : Protostomia Superphylum : Ecdysozoa Phylum : Arthropoda Subphylum : Chelicerata Class : Arachnida Order : Araneae Family : Ctenidae Genus : Phoneutria  

• Phoneutria bahiensis
• Phoneutria boliviensis
• Phoneutria eickstedtae
• Phoneutria fera
• Phoneutria keyserlingi
• Phoneutria nigriventer
• Phoneutria pertyi
• Phoneutria reidyi
• Phoneutria depilata , according to a 2021 study published in the journal ZooKeys , which found that Phoneutria boliviensis actually included two separate species from different habitats. 

Brazilian wandering spiders are large, with bodies reaching up to 2 inches (5 centimeters) and a leg span of up to 7 inches (18 cm), according to the Natural History Museum in Karlsruhe, Germany. The species vary in color, though all are hairy and mostly brown and gray, although some species have lightly colored spots on their abdomen. Many species have bands of black and yellow or white on the underside of the two front legs, according to the University of Florida . 

These arachnids "are called wandering spiders because they do not build webs but wander on the forest floor at night, actively hunting prey," Sewlal told Live Science in an interview conducted in 2014, before her death. They kill by both ambush and direct attack.

They spend most of their day hiding under logs or in crevices, and come out to hunt at night. They eat insects, other spiders and sometimes, small amphibians, reptiles and mice. 

Research into one species of Brazilian wandering spider, Phoneutria boliviensis , revealed that these spiders eat a mix of arthropods and reptiles. DNA metabarcoding, a technique that examines the DNA and RNA in a sample, of the guts of 57 spiders identified 96 prey species, including flies, beetles, butterflies, moths, grasshoppers, locusts and crickets, according to research from the University of Tolima and the University of Ibagué in Colombia . Some of the female spiders also ate lizards and snakes.

While their bites are powerful and painful, "their bites are a means of self-defense and only done if they are provoked intentionally or by accident," Sewlal said.

In the Brazilian wandering spider, just as in most spider species, the female is larger than the male. Males approach females cautiously when attempting to mate, according to the biology department at the University of Wisconsin-La Crosse . Males perform a dance to get females' attention, and males often fight each other over the female. The female can be picky, and she often turns down many males before choosing a mating partner. Once she does pick one, the male needs to watch out; females often attack the males once copulation is finished.

The female then can store the sperm in a separate chamber from the eggs until she is ready to fertilize them. She will lay up to 1,000 eggs at a time, which are kept safe in a spun-silk egg sac.

Brazilian wandering spiders typically live for one or two years.

Brazilian wandering spiders' venom is a complex cocktail of toxins, proteins and peptides, according to the Natural History Museum in Karlsruhe, Germany. The venom affects ion channels and chemical receptors in victims' neuromuscular systems.

After a human is bitten by one of these spiders, he or she may experience initial symptoms such as severe burning pain at the site of the bite, sweating and goosebumps, Sewlal said. Within 30 minutes, symptoms become systemic and include high or low blood pressure , fast or a slow heart rate , nausea, abdominal cramping, hypothermia, vertigo, blurred vision, convulsions and excessive sweating associated with shock. People who are bitten by a Brazilian wandering spider should seek medical attention immediately.

Their  venom is perhaps most famous for triggering painful and long-lasting erections . For that reason, in a 2023 study, scientists reported that they were testing the venom in humans as a potential treatment for erectile dysfunction in those for whom Viagra didn't work.

However, these bites are rare, and envenomations, or exposure to these toxins from a spider bite, are usually mild, Vetter said. For instance, a 2000 study in the journal Revista do Instituto de Medicina Tropical de São Paulo found that only 2.3% of people with bites who came to a Brazilian hospital over a 13-year period were treated with antivenom. (The other bites did not contain enough venom to require it.) Most of the bites were from the species P. nigriventer and P. keyserlingi in eastern coastal Brazil. About 4,000 bites reportedly happen each year in Brazil, but only 0.5% of those cases are severe, according to a 2018 study in the journal Clinical Toxinology in Australia, Europe, and Americas . Meanwhile, 15 deaths have been attributed to Phoneutria in Brazil since 1903, the 2018 study reported. 

"It is unlikely that the spider would inject all of its venom into you, as this venom is not only needed as a means of defense but to immobilize prey," Sewlal said. "So if it did inject all of its venom, it [would] have to wait until its body manufactured more before it could hunt." That would also leave the spider vulnerable to being attacked by predators.

Furthermore, Sewlal pointed out that venom production requires a lot of a spider's resources and time. "So if the spider were to attack frequently and use up all of its venom, it [would] be safe to assume that it has a ready food supply to replace the energy and resources used. This situation does not exist in the wild."

• Learn more about Brazilian wandering spiders from the University of Wisconsin-La Crosse .
• Read about several species of Brazilian wandering spiders, including several images of the arachnids at the University of Florida .
• Find a spider in your bananas? It may or may not be a deadly species, according to the University of California, Riverside .

This article was originally published on Nov. 20, 2014. 

Sign up for the Live Science daily newsletter now

Get the world’s most fascinating discoveries delivered straight to your inbox.

Jessie Szalay is a contributing writer to FSR Magazine. Prior to writing for Live Science, she was an editor at Living Social. She holds an MFA in nonfiction writing from George Mason University and a bachelor's degree in sociology from Kenyon College. 

• Laura Geggel Editor

Giant, invasive Joro spiders with 6-foot webs could be poised to take over US cities, scientists warn

Diving bell spider: The only aquatic arachnid that creates a web underwater to live in

Breakthrough 6G antenna could lead to high-speed communications and holograms

Most Popular

• 2 James Webb telescope confirms there is something seriously wrong with our understanding of the universe
• 3 6G speeds hit 100 Gbps in new test — 500 times faster than average 5G cellphones
• 4 DARPA's autonomous 'Manta Ray' drone can glide through ocean depths undetected
• 5 2 plants randomly mated up to 1 million years ago to give rise to one of the world's most popular drinks
• 2 Deepest blue hole in the world discovered, with hidden caves and tunnels believed to be inside
• 3 DARPA's autonomous 'Manta Ray' drone can glide through ocean depths undetected
• 4 Hundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos
• 5 Stunning image shows atoms transforming into quantum waves — just as Schrödinger predicted

Animal Corner

Discover the many amazing animals that live on our planet.

Brazilian Wandering Spider

The Brazilian Wandering Spider (Phoneutria fera) is an aggressive and highly venomous spider . It was first discovered in Brazil hence its name. However, this genus is known to exist elsewhere in South and Central America .

The Brazilian Wandering spider is a member of the Ctenidae family of wandering spiders.

The Brazilian Wandering spider appeared in the Guinness Book of World Records 2007 for being the most venomous animal .

In this particular genus, there are five known similar species whose members are also highly venomous. They include some of the relatively few species of spiders that present a threat to human beings.

Brazilian Wandering Spider Characteristics

The Brazilian wandering spider can grow to have a leg span of up to 4 – 5 inches. They are large hairy spindly-looking spiders who have eight eyes, two of which are large. Brazilian wandering spiders are fast-moving spiders, their legs are strong and spiny and they have distinctive red jaws which they display when angered.

The Brazilian wandering spider is not a Tarantula . Brazilian wandering spiders are not even in the same family group. Tarantulas are harmless to humans and are mostly ambush killers who wait for prey to come to them. Brazilian wandering spiders are active hunters. Brazilian wandering spiders and Tarantulas do have one thing in common, however, they do not eat bananas.

Brazilian Wandering Spider Habitat and Spider Webs

The Brazilian Wandering spider is so-called because it wanders the jungle floor, rather than residing in a lair or maintaining a web. This is another reason it is considered so dangerous. In densely populated areas, the Brazilian Wandering spider will usually search for cover and dark places to hide during daytime, leading it to hide within houses, clothes, cars, boots, boxes and log piles. This usually causes accidents when people disturb them.

The Brazilian Wandering spider is also called the ‘banana spider’ as it is occasionally found within shipments of bananas. As a result, any large spider appearing in a bunch of bananas should be treated with due care.

Brazilian Wandering Spider Diet

Adult Brazilian Wandering spiders eat crickets, other large insects, small lizards and mice. Spiderlings of this species eat flightless fruit flies and pinhead crickets.

Brazilian Wandering Spider Reproduction

All spiders produce silk, a thin, strong protein strand extruded by the spider from spinnerets most commonly found on the end of the abdomen. Many species use it to trap insects in webs, although there are many species that hunt freely such as the Brazilian Wandering spider. Silk can be used to aid in climbing, form smooth walls for burrows, build egg sacs, wrap prey and temporarily hold sperm, among other applications.

Brazilian Wandering spiders reproduce by means of eggs, which are packed into silk bundles called egg sacs. The male spider must (in most cases) make a timely departure after mating to escape before the females normal predatory instincts return.

Mature male spiders have swollen bulbs on the end of their palps for this purpose and this is a useful way to identify whether the spider is male or female. Once the sperm is inside the female spider, she stores it in a chamber and only uses it during the egg-laying process, when the eggs come into contact with the male sperm for the first time and are fertilized. The Brazilian Wandering spiders life cycle is 1 – 2 years.

Brazilian Wandering Spider Venom

Bites from the Brazilian Wandering spider may result in only a couple of painful pinpricks to full-blown envenomed. In either case, people bitten by this spider or any Ctenid should seek immediate emergency treatment as the venom is possibly life threatening.

The Phoneutria fera and Phoneutria nigriventer (two species of wandering spider) are the two most commonly implicated as the most vicious and deadly of the Phoneutria spiders.

The Phoneutria not only has a potent neurotoxin, but is reported to have one of the most excruciatingly painful envenoms of all spiders due to its high concentration of serotonin. They have the most active venom of any living spiders.

One of their members, the Brazilian Huntsman, is thought to be the most venomous spider in the world. Brazilian wandering spiders are certainly dangerous and bite more people than any other spiders.

Check out more  animals that begin with the letter B

More Fascinating Animals to Learn About

About joanne spencer.

I've always been passionate about animals which led me to a career in training and behaviour. As an animal professional I'm committed to improving relationships between people and animals to bring them more happiness.

Brazilian Wandering Spider: Care, Food, Habitat & Preventions

Mike Wallace

Have you ever heard of or do you know what a  Brazilian wandering spider is ? It is a big venomous spider from places like Central and South America, and people sometimes call it the  banana spider . Why? Well, we are about to find out!

Table of Contents

These wandering spiders are aggressive hunters who go out on the hunt at night. Their meals include both invertebrates (like insects) and vertebrates (creatures with a backbone, like small animals).

These spiders are super dangerous because their venom is like a powerful potion that can make people really sick or even worse. They usually hang out in tropical rainforests and even in cities, hiding in banana plants. 

So, let’s get more information about the world of this sneaky spider to learn the details about its looks, eating habits, where it lives, the venom it carries, and find out if it is genuinely risky. Ready to explore? Keep reading!

Brazilian Wandering Spider Description:

Scientific name and family:.

In Brazil, they are sometimes known as “ armed spiders ” (armadeiras), and they share the name “ banana spiders ” with a few other spiders. They have different names, but they are all talking about the same interesting spider!

The Brazilian wandering spider, scientifically known as  Phoneutria , Maximilian Perty kickstarted the Phoneutria genus in 1833. The name comes from the Greek word φονεύτρια , which means “murderess” and falls under the Animalia kingdom, Arthropoda phylum, and Arachnida class.

Within Arachnida, it is classified in the order Araneae, infraorder Araneomorphae, and Ctenidae family. The genus Phoneutria, described by Perty in 1833, includes the type species  Phoneutria fera .

This classification helps us understand where these spiders fit into the larger picture of living organisms.

The following 9 species are accepted by The  World Spider Catalog :

• Phoneutria bahiensis
• Phoneutria boliviensis
• Phoneutria eickstedtae
• Phoneutria fera
• Phoneutria keyserlingi
• Phoneutria nigriventer
• Phoneutria pertyi
• Phoneutria reidyi
• Phoneutria depilata

What do Brazilian Wandering Spider look like?

Size range:.

The spiders in the Phoneutria group can get pretty big in size. Their legs can stretch out to be 13 to 18 centimeters (5 to 7 inches) wide, and their bodies can have a range between 17 to 48 millimeters (a little more than half an inch to almost 2 inches) long.

The female Brazilian spiders can get pretty big, reaching up to 15 centimeters (5.9 inches) in length. On the other hand, the males are smaller, usually measuring around 7 centimeters (2.8 inches). They usually weigh up to 0.21 ounces.

They have long, slender legs, and even though some other spiders with different names might have longer legs, the Phoneutria spiders are champions when it comes to having the longest bodies and being the heaviest in their spider gang.

The spider’s body has two main parts. The first is the prosoma, kind of like its “head,” where you will find all eight legs, eyes, fangs (chelicera), and little multitasking arms (pedipalps).

The second part is the opisthosoma, holding the spinnerets for making silk, the back end opening (anal opening), “the lungs,” the heart, and the important bits for making baby spiders (reproductive organs).

So, the prosoma is like the front control center, and the opisthosoma is like the back office, handling things like silk-making and baby-making.

Brazilian spiders come in different colors, with most being hairy and shades of brown and gray. Some species may have lightly colored spots on their abdomen.

A distinctive feature of many species is the presence of bands of black and yellow or white on the underside of their two front legs.

Identification:

To identify a spider from the Phoneutria group, look for a dense brush of fine hairs on their leg parts. They might seem like other spiders, especially  Cupiennius , but here is how you can differentiate: 

• Phoneutria often have a dark line on the front of their palps and a thin black line on top of their head. 
• Check underneath, too; their legs usually have dark parts and light joints. Sometimes, the belly has black dots or is reddish. 
• Usually it has been observed that when they are upset, they do a cool defensive move like lifting their front legs high with a distinctive pattern. So, if you see a spider doing that dance, it is probably a Phoneutria!

Brazilian Wandering Spiders live all over the Americas, from Costa Rica to northern Argentina. They are like the residents of the jungle, chilling in forests east of the Andes in countries like Colombia, Venezuela, Ecuador, Peru, Bolivia, Brazil, Paraguay, and the Guianas.

Some, like P. reidyi, P. boliviensis, and P. fera, love the Amazon rainforest, while others prefer the Atlantic Forest in Argentina, Paraguay, and Brazil.

They have also made themselves at home in the Cerrado savanna. But if you head to northeastern Brazil, they are not around. These spiders have even taken trips to Chile and Uruguay.

Why are they called Banana Spiders?

These spiders are linked with bananas. Richard S. Vetter, a researcher at the University of California, found that these powerful spiders sometimes end up in North America and Europe by accident, hitching a ride in banana shipments.

But it is often a case of mistaken identity. Only a few Phoneutria species have been found in banana shipments, and sometimes, other spiders get the blame due to misidentification. 

What They Like to Eat or Hunt?

Their food includes flies, beetles, butterflies, moths, grasshoppers, locusts, and crickets. Occasionally, they might even feast on small creatures like amphibians, reptiles, or mice. All these diet or food findings tell us about how diversified eating habits these fascinating spiders have.

Mating and Lifecycle:

Like most spiders, the female spiders are bigger than the males. When the male spider wants to be friends, they do a little dance (vibrating his pedipalps and specialized sensory appendages) to signal his intentions to impress the female, but it is a cautious approach.

The behavior of the female can be choosy, and she might say no to a few before picking the right one. 

After the dance, sometimes, the females decide to attack them, or if she is interested, she can store the male’s baby-making material in a special place until she is ready to use it.

Then, she lays a bunch of eggs, up to 1,000 at a time, and keeps them safe in a silk egg sac. Sadly, after laying her eggs, the mom spider says goodbye. It is her way of making sure the new spiders are ready to explore the world on their own.

The lifespan of the banana spider (Phoneutria nigriventer) differs for males and females. Females usually live for 6 to 8 weeks after reaching maturity, while males have a shorter lifespan of 2 to 3 weeks after their last molt. 

Certain mammals, like coatis (Procyonidae, which includes raccoons) and other small insectivores, birds are potential predators of large wandering spiders.

These spiders got their name as wandering spiders because of the fact that they are not into web building. Instead, they stroll around the forest floor at night(nocturnal), searching for dinner.

Brazilian Wandering Spiders are active hunters and use both ambush tactics and direct attacks to catch their prey. During the day, they prefer cozy spots like under logs or in crevices, only emerging at night for their hunting adventures. These spiders do not build nests like other spider species.

While wandering spiders are not naturally aggressive towards humans, they won’t hesitate to bite if they feel cornered or threatened. Most bites happen when a spider accidentally gets trapped in clothing or bedding. 

Bite and Venom:

The bite of the armed spider is the most dangerous in the world as the venom it carries can be harmful to humans.

The danger is not just about how strong the venom is; it is also about factors like the spider’s likelihood to bite and how close it is to where people live.

These spiders often hide in houses, clothes, and other dark places during the day, making accidental bites more likely. 

While their fangs are adapted for small prey, some experts think they might give a “dry” bite in defense to save venom. Studies suggest that not all bites inject venom, and serious cases requiring antivenom are rare.

However, there have been confirmed cases of death, with symptoms appearing quickly, including:

• Severe pain
• Breathing difficulties
• Increased heart rate and blood pressure
• In severe cases, paralysis and death

The severity can depend on the spider’s sex, with females generally more dangerous. The spiders produce less venom in colder months, and a small amount can be potent enough to harm.

Fortunately, bites from Brazilian spiders are rare, and when they do occur, the exposure to the toxins is generally mild, as explained by Vetter.

Also Read: What is a Huntsman Spider? (Heteropodidae) – The Ultimate Guide

Banana Spider’s Facts:

Below are essential details about Brazilian wandering spiders:

• They hold the title for the world’s largest spiders , boasting leg spans reaching up to 15 centimeters (6 inches).
• Their venom packs a powerful punch, capable of inducing severe pain, paralysis, and, in extreme cases, fatal outcomes for humans.
• Despite their intimidating reputation, they are generally non-aggressive and resort to biting only when provoked.
• These spiders inhabit tropical rainforests and urban areas across Central and South America.
• In case someone has been bitten by this spider, he/she needs quick medical treatment to control the effects timely.

Treatment and Preventive Measures:

If bitten by a wandering spider or armed spiders, prompt medical attention is crucial. There is an antivenom for the spider’s venom, but its effectiveness is highest when administered within a few hours of the bite.

To prevent a bite:

• Wear protective clothing, use shoes and long pants when in areas where these spiders are found.
• Before wearing your clothes and shoes, make sure to check them to ensure no spiders are hiding.
• Maintain cleanliness and avoid leaving food or garbage exposed, as this can attract spiders.

These preventive measures are essential for minimizing the risk of encountering and getting bitten by Banana spiders.

Can Brazilian spiders kill humans?

Brazilian wandering spiders (Phoneutria nigriventer) are venomous and can potentially kill a human with a single bite. Their venom contains a potent neurotoxin that can cause severe pain, paralysis, and even death. 

Are Brazilian spiders poisonous?

Yes the venom of this spider is poisonous, that can cause death. While Brazilian wandering spiders are potentially dangerous, actual bites are relatively rare.

By adopting preventive measures and promptly seeking medical attention if bitten, the risk of serious complications can be significantly reduced.

Can you keep Brazilian spiders as pets?

It is strongly advised against keeping wandering spiders as pets due to their venomous nature and the potential risk to human safety.

Managing these spiders in captivity demands specialized knowledge and handling procedures to minimize the risk of bites.

Final Thoughts:

The Brazilian wandering spider, banana spider, or armed spider is a large and venomous arachnid found in Central and South America. While their potent venom can be harmful to humans, encounters are rare.

These nocturnal hunters have adopted various habitats, from rainforests to urban areas, and are associated with banana shipments. Understanding their appearance, behavior, and habitat is crucial for minimizing risks.

Seeking immediate medical attention after a bite is essential, as antivenom is available but most effective when administered promptly. Despite their fearsome reputation, the Brazilian spider remains a captivating and potentially dangerous species.

About the author

Spiders Planet is the ultimate source of information about spiders! All the articles on this site will provide you with the most accurate and up-to-date information written by me and a group of writers, that is well-researched and fact-checked before it’s published.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Latest posts

Do Spiders Eat Fruit? Unveiling the Secrets

The connection between animals and fruits showcases a captivating example of mutualism, a win-win relationship where both parties benefit. Animals gain access to…

Are Woodlouse Spiders Venomous?

The Woodlouse spider (Dysdera crocata) is a spider species that mainly hunts and feeds on woodlice and is mostly found in Africa, Asia,…

What Does Wolf Spiders Eat?

Wolf spiders are excellent hunters of small insects. Unlike spiders that weave intricate webs, these predators rely on sharp vision and stealthy moves…

Wellcome to SpiderZoon

• Spider Facts

Brazilian Wandering Spider: Size, Bite, Diet and Other Facts 

The Brazilian Wandering Spider is a venomous arachnid with a fearsome reputation. This South American rainforest dweller packs a powerful punch, but don’t let its nickname “banana spider” fool you – they’re active hunters, not web-spinners. Despite their size and venom, bites are uncommon as they’re typically shy.

The Brazilian Wandering Spider has garnered significant attention due to its potent venom, which makes it one of the world’s most venomous spiders. Understanding its biology and behavior is crucial for both scientific research and public safety.

Scientific classification

The Brazilian Wandering Spider belongs to the family Ctenidae within the order Araneae. Its scientific classification is as follows:

• Kingdom: Animalia
• Phylum: Arthropoda
• Class: Arachnida
• Order: Araneae
• Family: Ctenidae
• Genus: Phoneutria

The Brazilian Wandering Spider goes by various common names, including “armed spider,” “banana spider,” and “wandering spider.” Synonyms for this species may include Ctenus , which was formerly used for some Phoneutria species.

Distribution and habitat

Distribution:

• South American:  Found throughout most of South America east of the Andes mountains, including countries like Brazil (their namesake), Argentina, Paraguay, and up into northern regions.
• Central American Touch:  A few species even reach southern Central America.
• Rainforest Dwellers:  Primarily found in the lush rainforests of South America.
• Not Picky Places:  They can also adapt to other habitats like the Atlantic Forest and even some urban areas.
• Daytime Hideouts:  While they wander at night, they seek shelter during the day in places like termite mounds, under rocks, or even (unintentionally) in bananas!

Physical Characteristics

 size and weight.

The Brazilian wandering spider is a creepy crawly giant. Their bodies can grow up to 2 inches (5 centimeters) long, but that’s not the scary part. Their legs can span a whopping 7 inches (18 cm), making them look even bigger. They are one of the biggest true spiders by body weight and size.

Despite their impressive leg span, Brazilian wandering spiders are relatively light. They only weigh around 6 grams, which is about the same as two pennies. While they might look imposing, they’re not the heaviest arachnids around.

Coloration and markings

These spiders exhibit a range of colors, including brown, black, and sometimes reddish hues. They often have distinctive markings on their bodies, which can vary between species. These markings may include stripes or patterns that serve as a key identification feature.

Notable features

One of the most notable features of the Brazilian Wandering Spider is its elongated, robust body and long, agile legs. They have sharp fangs, which they use to inject venom into their prey or in self-defense.

Sexual dimorphism

Sexual dimorphism is evident in this species. Females are larger and bulkier than males, while males have longer, more slender legs. Additionally, males possess specialized structures known as pedipalps, which are used during mating.

In the following sections of this article, we will delve deeper into the behavior, venom, and ecological role of the Brazilian Wandering Spider, shedding light on why this species has both fascinated and instilled fear in those who encounter it.

 Behavior and Ecology

 Nocturnal habits

Brazilian Wandering Spiders are primarily nocturnal creatures. They are most active during the night, venturing out of their daytime hiding places to hunt for prey and engage in mating activities. Their nighttime activity allows them to avoid predators and reduce the risk of desiccation in the hot tropical sun.

Hunting and feeding behavior

These spiders are agile hunters and primarily feed on insects, small vertebrates, and other arachnids. They do not build webs to capture prey but instead rely on their excellent senses, including acute vision and touch, to locate and stalk their victims. They often wander in search of food and are known for their swift and lethal strikes. Once they subdue their prey, they inject venom to immobilize it before feeding.

Brazilian Wandering Spiders (Phoneutria) are active hunters and have distinctive feeding behaviors. Here’s an overview of their feeding habits:

• Active Predators: Brazilian Wandering Spiders are not web-builders like many other spider species. Instead, they are active predators. They actively roam their environment in search of prey rather than waiting for insects to stumble into a web.
• Hunting Strategy: When hunting, these spiders use their excellent senses, including acute vision and touch, to locate potential prey. They are known for their agility and speed, which they use to stalk and capture their victims. They have sharp fangs, which they use to deliver a venomous bite to immobilize their prey.
• Diet: Their diet consists primarily of insects and other arthropods, but they are opportunistic feeders and may consume a variety of small creatures, including small vertebrates such as frogs and lizards when the opportunity arises.
• Venom Use: Brazilian Wandering Spiders inject venom into their prey to immobilize and partially digest it. Their venom contains neurotoxins that affect the nervous system of their victims. Once the prey is incapacitated, the spider can feed on it at its leisure.
• Feeding Process: After subduing their prey with a venomous bite, the spider uses its chelicerae (fangs) to break down the prey’s tissues. The venom also helps in predigestion, turning the prey’s insides into a semi-liquid form that the spider can ingest. They can consume both the internal fluids and solid parts of their prey.
• Frequency of Feeding: The frequency of feeding can vary depending on factors such as the availability of prey and the spider’s size. Generally, they need to feed periodically to sustain their energy and growth. Spiderlings may require more frequent meals to support their rapid growth, while adults can go longer periods between meals.

Overall, the Brazilian Wandering Spider’s feeding strategy is well-suited for their active and wandering lifestyle, allowing them to efficiently capture and consume a variety of prey in their natural habitat.

Role in the ecosystem

The Brazilian Wandering Spider plays a vital role in controlling insect populations within its habitat. By preying on a variety of insects and other small creatures, they help maintain ecological balance. Additionally, their presence in the rainforest ecosystem contributes to the overall biodiversity and food web.

Mating and reproduction

Mating in Brazilian Wandering Spiders is a complex and potentially dangerous process. Male spiders must carefully approach and court a receptive female to avoid being mistaken for prey. They use specialized pedipalps to transfer sperm to the female’s reproductive organs. After successful mating, females lay egg sacs containing hundreds of eggs. They guard these sacs and ensure the survival of their offspring until they hatch.

 Lifespan and growth

The lifespan of Brazilian Wandering Spiders varies between males and females. Males generally have a shorter lifespan, typically living for a few months to a year after reaching maturity. Females, on the other hand, can live for several years. The growth of these spiders involves a series of molts, during which they shed their exoskeletons to accommodate their increasing size. Molting is a vulnerable period in their lives as their new exoskeleton is initially soft and requires time to harden.

Venom and Envenomation

Composition of venom.

The venom of Brazilian Wandering Spiders is a complex mixture of neurotoxins, cytotoxins, and other enzymes. One of the most significant components is a neurotoxin called PhTx3, which targets the nervous system of their prey.

Toxicity and effects on humans

The venom of these spiders is highly potent and can be lethal to their prey. In humans, envenomation can cause a range of symptoms, including intense pain, muscle cramps, fever, nausea, and in severe cases, paralysis and death. It’s important to note that while their venom is potent, actual fatalities from Brazilian Wandering Spider bites are rare due to the availability of medical treatment.

First aid and medical treatment

In the event of a Brazilian Wandering Spider bite, immediate medical attention is crucial. First aid measures may include cleaning the wound and applying ice to reduce pain and swelling. However, the primary treatment involves antivenom, which can counteract the effects of the spider’s venom.

Cases of envenomation and fatalities

Although fatalities from Brazilian Wandering Spider bites are uncommon, there have been documented cases of severe envenomation, especially in regions where medical treatment is not readily available. These spiders are generally non-aggressive and will bite humans only in self-defense when provoked, or if they feel cornered.

Understanding the behavior, ecology, and venomous nature of the Brazilian Wandering Spider is crucial for both scientific research and public awareness, helping to minimize the risk of envenomation and promote coexistence with this remarkable but potentially dangerous arachnid.

Brazilian wandering spider life cycle

The Brazilian wandering spider has a fascinating life cycle that revolves around hunting and motherhood. Here’s a breakdown:

• Egg Haven:  After mating, the female lays hundreds, sometimes even a thousand, eggs in a silken sac. This becomes their protected nursery.
• Tiny Terrors:  Hatching from the eggs emerge translucent spiderlings called larvae.
• Nymph Stage:  The larvae molt a few times, transforming into nymphs. Think of them as mini-adults but without the ability to reproduce yet.
• Shedding for Size:  As nymphs grow, they undergo multiple molts, shedding their outer shell to accommodate their larger bodies.
• Ready to Roam:  After the final molt, the spider emerges as a full-fledged adult, complete with reproductive organs. Now, they can join the wandering lifestyle and continue the cycle.

The life cycle begins when a female Brazilian Wandering Spider lays her eggs. She typically creates an egg sac made of silk and deposits it in a concealed location, such as a tree hollow or leaf litter. Inside the sac, she may lay hundreds of eggs. The female guards the egg sac and ensures its protection until the spiderlings hatch. The duration of the egg stage varies depending on environmental conditions but generally lasts for a few weeks.

Spiderling Stage

After the incubation period, spiderlings (young spiders) emerge from the egg sac. They are extremely vulnerable at this stage and rely on their mother’s protection and guidance. Spiderlings are miniature versions of adult spiders but lack the full coloration and size. They disperse from the nest once they have molted and are capable of hunting on their own. During this stage, they grow rapidly by molting, shedding their exoskeletons to accommodate their increasing size.

Juvenile Stage

As spiderlings continue to molt and grow, they progress into the juvenile stage. During this phase, their coloration becomes more distinct, and they start to develop the characteristic features of adult Brazilian Wandering Spiders. They become increasingly independent and begin to exhibit hunting behaviors. The duration of the juvenile stage can vary but often lasts several months.

Sub-Adult Stage

The sub-adult stage is an intermediate phase between juvenile and adult. At this point, the spiders are closer in size and appearance to adults but have not yet reached sexual maturity. They continue to molt, with the frequency of molting gradually decreasing as they approach adulthood. Sub-adult spiders may exhibit more territorial behaviors as they compete for resources and prepare for eventual mating.

Adult Stage

Upon reaching sexual maturity, Brazilian Wandering Spiders enter the adult stage. This is when they are fully developed and capable of reproduction. Females are larger and bulkier than males, and males possess specialized structures called pedipalps, which they use during mating. Adult spiders engage in mating activities, and females lay eggs to continue the life cycle. Adult Brazilian Wandering Spiders can live for several years, with females typically having longer lifespans than males.

Understanding the life cycle of these spiders is essential for studying their behavior, reproductive biology, and population dynamics. It also provides insights into their adaptation strategies in the complex ecosystems of South and Central America.

Brazilian Wandering Spider Bite

Brazilian Wandering Spiders are known for their potent venom and, occasionally, their bites on humans. While bites are relatively rare due to the spider’s non-aggressive nature, understanding the consequences of a bite is crucial for public safety.

Studying Brazilian Wandering Spider bites is of great interest for several reasons. It helps healthcare professionals provide appropriate medical treatment, raises awareness among communities in spider habitats, and contributes to our understanding of venomous arachnid envenomations.

The venom of Brazilian Wandering Spiders is a complex mixture of neurotoxins, cytotoxins, and enzymes. It contains various components, including PhTx3, which is a potent neurotoxin affecting the nervous system.

Brazilian Wandering Spider bites can have a range of effects on the human body, including intense pain, muscle cramps, fever, nausea, and in severe cases, paralysis. The severity of the symptoms depends on factors such as the amount of venom injected and the individual’s sensitivity to the venom. There are several types of spider bites .

Symptoms of a Brazilian Wandering Spider Bite

Local symptoms

• Intense pain
• Itching or burning sensation
• Formation of blisters or lesions

Systemic symptoms

• Muscle cramps and spasms
• Abdominal pain
• Nausea and vomiting
• Elevated heart rate
• Hypertension (high blood pressure)
• Respiratory distress

Severity and variations

The severity of Brazilian Wandering Spider bite symptoms can vary widely. In some cases, symptoms may be mild and resolve on their own, while in severe envenomations, life-threatening complications can occur. Individual reactions to the venom can also vary, making it challenging to predict the exact outcome of a bite.

First Aid and Immediate Response

Steps to take after a bite

Immediate response to a Brazilian Wandering Spider bite should include:

• – Washing the bite area with soap and water.
• – Applying a clean, cool compress to reduce pain and swelling.
• – Immobilizing the affected limb or area.
• – Keeping the bite victim calm to prevent an elevated heart rate.

Do’s and don’ts in case of a bite

• – Seek medical attention promptly.
• – Take note of the spider’s appearance (if possible) to aid identification.
• – Keep the bite victim still and calm to reduce the spread of venom.
• – Do not try to suck out venom or make incisions at the bite site.
• – Avoid applying tourniquets.
• – Don’t use ice directly on the skin as it can worsen tissue damage.

Seeking medical attention

Medical attention is essential after a Brazilian Wandering Spider bite, even if symptoms appear mild initially. Antivenom is available and can be administered to counteract the effects of the venom. Medical professionals can also manage symptoms and monitor for potential complications.

Complications and Long-Term Effects

Potential complications

Complications from Brazilian Wandering Spider bites can include:

• – Severe muscle spasms
• – Respiratory distress
• – Cardiovascular issues
• – Kidney failure (rare)
• – Allergic reactions to antivenom

Long-term consequences

Long-term consequences of a bite can vary depending on the severity and medical treatment received. Some individuals may experience lingering pain, muscle weakness, or psychological trauma following a severe envenomation.

Recovery and rehabilitation

Recovery from a Brazilian Wandering Spider bite typically involves medical treatment, rehabilitation for muscle and nerve damage, and psychological support for individuals affected by the experience. Rehabilitation may include physical therapy to regain muscle strength and function. Prompt medical attention and appropriate care are crucial for minimizing long-term effects and complications.

Facts of Brazilian Wanding Spider

Here are 10 creepy crawly facts about the Brazilian Wandering Spider:

• Big and Hairy:  These spiders are giants! Their bodies can grow up to 2 inches (5 centimeters) long, with a leg span of up to 7 inches (18 cm). They are covered in hairs, making them appear even bigger.
• Wanderlust:  They are aptly named – Brazilian wandering spiders don’t spin webs. Instead, they wander the forest floor at night in search of prey.
• Venomous Bite:  Their venom is considered one of the most potent among spiders. A bite can cause severe pain, swelling, sweating, nausea, and even priapism in males. Thankfully, bites are rare as they are typically shy and defensive.
• Not So Fond of Bananas:  While sometimes called ‘banana spiders,’ they are not typically found in bananas. They might, however, take shelter in them during transport, which is how they might end up in a faraway land.
• Rainforest Resident:  These spiders are native to the rainforests of South America, particularly in Brazil.
• Fearsome Feasters:  They’re active hunters and will eat almost anything they can overpower, including insects, lizards, frogs, and even small rodents.
• Mom’s the Word:  Female Brazilian wandering spiders are dedicated mothers. They lay hundreds of eggs in a silken sac and fiercely guard them until they hatch.
• Multiple Molts:  Like all spiders, Brazilian wandering spiders grow through molting. They shed their exoskeleton multiple times as they grow into adults.
• Mating Dance:  Male Brazilian wandering spiders perform a elaborate mating dance to attract a female.
• Medicinal Potential:  Despite their scary reputation, the venom of the Brazilian wandering spider is being studied for its potential use in treating erectile dysfunction.

What happens if a Brazilian Wandering Spider bites a man?

A Brazilian Wandering Spider bite on a man can cause a range of symptoms, some severe:

• Pain:  The bite is known for causing intense, localized pain at the site.
• Autonomic effects:  Sweating, nausea, and increased heart rate are common.
• Priapism:  In some cases, males may experience a prolonged and painful erection (priapism). This is due to a component in the venom.
• Muscle paralysis:  Severe bites can lead to muscle paralysis, which can affect breathing in rare cases.

However, it’s important to remember:

• Bites are uncommon as these spiders are typically shy and defensive.
• Antivenom is available and effective in treating bites.

If bitten, seek medical attention immediately. Early treatment can help prevent complications and ensure a full recovery.

How poisonous is a Brazilian Wandering Spider?

Brazilian Wandering Spider packs a nasty venomous punch, considered one of the strongest among spiders. Bites are rare though, as they’re shy and prefer to escape trouble.

What is the world’s deadliest spider?

The term “deadliest” can be subjective and depends on how one defines it (e.g., based on venom potency or human fatalities). However, the Brazilian Wandering Spider (Phoneutria) is often considered one of the most venomous spiders in the world. Another spider often mentioned in discussions of venom toxicity is the Sydney Funnel-web Spider (Atrax robustus and Atrax formosus), found in Australia. These spiders are known for their potent venom and have caused fatalities in the past.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Related Article

Can a Daddy Long Legs Bite Kill You (You Need to Know)

7 Facts About The Brazilian Wandering Spider

Are Wolf Spiders Poisonous for Humans, Cats or Dogs? (Explained)

When To Worry About A Spider Bite? (Need to Know)

Fact Animal

Facts About Animals

Brazilian Wandering Spider Facts

Brazilian wandering spider profile.

There are more than 50,000 species of spider, and the vast majority are less dangerous than a honeybee. Almost none are aggressive, and of those with medically significant venom, only a small percentage are capable of causing death. So, on the whole, arachnophobes are just being a bit silly.

But there’s one spider that vindicates all of these fears, and few animals are as globally renowned to be a serious threat to human lives as the Brazilian Wandering Spider .

Brazilian Wandering Spiders are actually 9 species of spider in the same genus ‘Phoneutria’, one of which is found in Central America, with the rest in South America.

Brazilian Wandering Spider Facts Overview

These spiders are called wandering spiders because of instead of spinning a web to wait for food, or occupying a lair, they spend their night wandering in the leaf litter of the jungle floor for prey.

The sensitive hairs on its body help detect vibrations of passing prey, and it will feed on insects, lizards, frogs and any animals as large as itself.

During the day they will hide under logs, rocks, or inside termite mounds and banana plants. They will also sometimes wander into urban areas and homes, where they can come into contact with humans.

Brazilian wandering spiders are aggressive , dangerous and frightening. For once, this is an animal you should be wary of.

The females are larger, around 50% heavier than males, and produce more venom, and this might be a clue as to why their Greek name translates to “ Mudress” . These spiders will often stand and fight and have an intimidating threat display.

The potency of their venom is one of the reasons they’re so dangerous, and their ability to hide away in fruit and shoes explains why most bites are on extremities.

Interesting Brazilian Wandering Spider Facts

1. armed spiders.

In Brazilian, these are sometimes known as armed spiders, on account of their elongated front legs.

They can convey quite a bit of information with these legs, and as wandering spiders, use them to get about the forest, looking for food.

2. Banana Spiders

They’re also sometimes called ‘banana spiders’ on account of their status as a stowaway on popular fruit imported from the tropics.

This is becoming less common as stricter regulations ensure there’s less contamination of fruits, but there’s always a chance your next bunch of bananas will have a family of these spiders living inside it.

3. They have the largest venom glands of any spider

Females produce more venom than males, but both sexes have enormous venom glands. These glands are even more impressive when you consider the size of the spider is significantly less than the largest around.

The venom glands of the Brazilian Wandering Spider are over a centimetre long, and this is all housed inside the bright red chelicerae (mouth parts) which they are quick to display whenever they get upset. 1

4. They’re aggressive

These spiders can grow quite large and have long, brightly-coloured legs. Unlike most spiders, they’re known to stand their ground when threatened and are far quicker to bite than many other species.

They’ll still try to scurry away where possible, and they’re not out to get anybody.

But where most other species will flee, the wandering spiders’ aggression does make it more likely to be involved in incidents.

Most bites are on fingers and toes, a sign that they’re being stepped on or grabbed inadvertently. When the spider feels cornered, it’ll rear up on its back legs and waves its colourful arms around as a warning.

Then it’ll sway side to side, beckoning you to have a go. Anything foolhardy enough to call this bluff gets a wealth of envenomation effects. 2 3

5. They give some men erections

There are ways to accomplish this with fewer side effects, but a bit from a Brazilian wandering spider does come with a certain Viagral quality.

This isn’t as fun as it might sound. Prolonged erections in this manner are likely to harm and destroy muscles and blood vessels in the penis and could cause irreparable damage.

Besides this, the assault on the central nervous system that comes with envenomation by this spider doesn’t sound worth it. 4

6. And some people die

This assault brings with it a whole host of unpleasant symptoms. Seizures, foaming at the mouth, inability to speak, collapse, and a host of other miserable experiences.

Paralysis is possible, as is cardiac shock. Blood vessels can burst in the brain, or anywhere else, and in many cases, this can be enough to kill a person.

This spider has one of the most potent venoms of all, and there are multiple legitimate records of death as a result of bites.

7. But they’re rarely fatal

While the Brazilian wandering spider is potentially one of the most dangerous spiders in the world, there is some evidence to suggest it gives a dry bite, defensively.

This means that despite exceptionally toxic venom, the amount actually injected is less than some of the other contenders, and this is what makes it typically less lethal than the Australian funnel webs.

These spiders are classified as Dangerous Wild Animals and would therefore require a special permit to keep. Bites from wandering spiders are common in South America, but antivenom is often readily available, and they rarely result in death.

In most cases, lethal bites are cases of a very young or very old victim, and few people of healthy age are killed. 5

8. They do invade the UK sometimes

These unquestionably scary spiders show up in supermarkets in the UK on occasion, having hitched a ride on banana shipments.

On more than one occasion they’ve made their way into shoppers’ homes, but it doesn’t appear that there are any cases of them biting people as a result.

These spiders aren’t suited for temperate climates and don’t survive Winter, so there’s no risk of them multiplying.

Brazilian Wandering Spider Fact-File Summary

Scientific classification, fact sources & references.

• PeerJ. (2017), “ Dimensions of venom gland of largest venom glands in all spiders ”, Bio Numbers.
• Dave Clarke (2010), “ Venomous spider found in Waitrose shopping ‘beautiful but aggressive’” , The Guardian.
• “ Phoneutria Perty (Arachnida: Araneae: Ctenidae) ”, UF-IFAS University of Florida
• Kátia R.M. Leite (2012), “ Phoneutria nigriventer spider toxin Tx2-6 causes priapism and death: A histopathological investigation in mice ”, Science Direct.
• “ Brazilian wandering spiders: Bites & other facts ”, Live Science.

Brazilian Wandering Spider

The Brazilian Wandering Spider (Phoneutria fera) is a teardrop-shaped arachnid with a brown coloration. Known for its potent venom, it thrives in both the lush rainforests and human dwellings of Brazil. Its notorious wandering behavior makes it a significant presence in its habitats.

Fascinating Facts about Brazilian Wandering Spider

Here are 3 interesting facts about Brazilian Wandering Spider:

• The Brazilian Wandering Spider is considered the world's most venomous spider by the Guinness World Records.
• They are known as 'wandering' spiders because they roam the jungle floor at night instead of residing in a lair or web.
• Despite their notorious reputation, their bites rarely cause death in humans due to the small amount of venom they inject.

Taxonomy and Classification

Here is the scientific categorization of Brazilian Wandering Spider, providing a glimpse of their position in the biological hierarchy:

Lifecycle and Growth

Brazilian Wandering Spider's life is a journey of transformation - an adventure marked by the following captivating stages:

Egg → Spiderling → Adult

The Brazilian Wandering Spider, primarily found in the rainforest, exhibits a lifecycle that spans both wilderness and human habitats. From egg to adult, it navigates a complex path through dense foliage and human dwellings, adapting to these contrasting environments.

Brazilian Wandering Spider Behaviour and Adaptations

Brazilian Wandering Spiders are known for their nomadic behavior. Instead of building webs to catch prey, they actively hunt at night, using their highly developed senses, particularly vision, to locate and stalk their prey.

These arachnids have adapted to a wide range of habitats, from forests to urban areas. Their potent neurotoxic venom, one of the most powerful among spiders, allows them to incapacitate and consume a variety of prey.

Brazilian Wandering Spider Interaction with the Ecosystem

Now, let's look at how they help maintain the balance in the ecosystem:

• Brazilian Wandering Spiders play a crucial role in controlling the population of their prey, which includes insects and small mammals.
• They serve as a food source for larger animals, contributing to the food chain in their ecosystem.
• Their venom, although dangerous to humans, is studied for medicinal purposes including treatments for erectile dysfunction and pain relief.

Threats to Brazilian Wandering Spider

Despite their popularity and predator status, Brazilian Wandering Spider encounter several threats as well:

• Destruction of natural habitat due to deforestation
• Increased usage of pesticides affecting their food chain
• Climate change potentially disrupting their breeding patterns

Also Check:

If you're interested in learning about at some more interesting insects, here are two suggestions for you, below 👇

Do Brazilian Wandering Spider Bite?

Learn if Brazilian Wandering Spider bite, what you should do if you get bitten by them, and other interesting information.

Other Bug Profiles

Check other interesting bugs:

• Lone Star Tick
• Brown Dog Tick

What do Brazilian Wandering Spider Eat?

Learn what food Brazilian Wandering Spider eat, and also information about how they eat and drink.

Brazilian wandering spider | bite,Size, Habitat, & Facts

Brazilian wandering spider.

brazilian wandering spider size

Their body length ranges from 17 to 48 mm (43⁄64 to 1+57⁄64 in). Phoneutria are impressive spiders reaching body sizes up to 3.5 centimeters and leg spans up to 15 centimeters. They are nocturnal, hunting at night, and hiding in dark places during the day.

Wandering spider bite

Along with other members of the genus, they are often referred to as Brazilian wandering spiders. Its bite can cause severe symptoms, including increased pulse, blood pressure, and respiratory rate; extraordinary pain; penile erection that lasts for several hours; and, in several documented cases, death.

Phoneutria spp.  is actually a genus with five known similar species whose members are highly venomous. They include some of the relatively few species of spiders that present a threat to human beings. The Brazilian Wandering Spider (Phoneutria fera) can grow to have a leg span of up to 4-5 inches.

Wandering spider, (family Ctenidae), any member of the family Ctenidae (order Araneida), a small group of large spiders of mainly tropical and subtropical regions, commonly found on foliage and on the ground.

The Brazilian wandering spiders, Phoneutria fera and P. nigriventer, are sometimes also referred to as banana spiders because they are frequently found on banana leaves. They have an aggressive defense posture, in which they raise their front legs straight up into the air. Phoneutria are venomous, and their venom is toxic to the nervous system, causing symptoms such as salivation, irregular heartbeat, and prolonged painful erections (priapism) in men. Scientists are investigating the venom of P. nigriventer as a possible treatment for erectile dysfunction.

These spiders are notorious both due to their toxic venom, and because they are not reluctant to attack people who appear threatening.

Of the five species known, P. nigriventer and P. fera most frequently receive mention in mass-media publications. P.nigriventer species are responsible for most cases of venom intoxication in Brazil because this species is commonly found in highly populated areas of Brazil, namely the South-eastern states: São Paulo, Minas Gerais, Rio de Janeiro and Espírito Santo.The P. fera is native to the northern portion of South America, especially the Brazilian Amazônia, Venezuela and French Guiana.

Brazilian wandering spider BITES AND VENOMB

　　razilian wandering spiders’ venom is a complex cocktail of toxins, proteins and peptides, according to the Natural History Museum in Karlsruhe, Germany. The venom affects ion channels and chemical receptors in victims’ neuromuscular systems.

　　After a human is bitten by one of these spiders, he or she may experience initial symptoms such as severe burning pain at the site of the bite, sweating and goosebumps, Sewlal said. Within 30 minutes, symptoms become systemic and include high or low blood pressure, fast or a slow heart rate, nausea, abdominal cramping, hypothermia, vertigo, blurred vision, convulsions and excessive sweating associated with shock. People who are bitten by a Brazilian wandering spider should seek medical attention immediately.

Recent studies suggest that these spiders only inject venom in approximately one-third of their bites and may only inject a small amount in another third. However, research in this area is hindered by the difficulty of identifying particular subspecies. Thus the effects of the bites from these spiders are hard to predict when based on sketchy information or if the spider has not been identified definitively. 

Bites from these spiders may result in only a couple of painful pinpricks to full-blown envenomation. In either case, people bitten by a Phoneutria or any Ctenid should seek immediate emergency treatment as the venom is possibly life threatening.

he Phoneutria fera and nigriventer  are the two most commonly implicated as the most virulent of the Phoneutria spiders. The Phoneutria not only has a potent neurotoxin, but is reported to have one of the most excruciatingly painful envenomations of all spiders due to its high concentration of serotonin.  

Brazilian Wandering Spiders are extremely fast, extremely venomous, and extremely aggressive and are ranked among the most venomous spiders known to man. In fact, the Brazilian Wandering Spider is the most venomous spider in the New World! In South America, these true spiders are commonly encountered in peoples’ homes, supposedly hiding in peoples’ shoes, hats, and other clothes. It does not remain on a web, rather, it wanders the forest floor, which is how it got its name.

The Brazilian Wandering Spider has another name – the  Banana Spider  and it was given this name  because there have been cases where these spiders unintentionally appeared on banana boats heading for the United States.

​　　Brazilian Wandering Spider: One Of The World’s Most Venomous Spiders May Be Lurking In Your Bananas

　　Meet the Brazilian wandering spiders in the genus Phoneutria, also referred to as the armed spiders or the banana spiders. The members of this group have one of the most dangerous bites of any spider species on Earth and they have been classified as the world’s most venomous spider many times.

　　What Are The Effects Of A Brazilian Wandering Spider Bite?

　　Brazilian wandering spiders often make the news because of the unusual symptoms caused to humans after being bitten by one.

　　A 2023 study in Frontiers In Molecular Biosciences suggested there were around 4,000 cases of people being bitten by Phoneutria nigriventer in Brazil each year. Their venom affects the nervous system, causing double vision, salvation, irregular heartbeat – and even prolonged painful erections, known as priapism. In fact, because of this, their venom is being explored as a possible treatment for erectile dysfunction conditions.

　　Can A Brazilian Wandering Spider Bite Kill You?

　　The neurotoxin PhTx3 is to blame for these symptoms, and according to the Independent, a wandering spider bite can reportedly be fatal in as little as 60 minutes. However, an effective anti-venom is usually enough to save those affected. A study into Phoneutria boliviensis in 2019 suggested that the species had adapted its venom to catch vertebrates as opposed to lizards and amphibians, which might explain why the venom is so toxic to humans.

black and yellow garden spider

Brown recluse spider bite stages pictures.

A home for Tarantula, Spider, Scorpion and Arachnid Enthusiasts.

Brazilian Wandering Spider size: how big do they get?

As an avid arachnid enthusiast, my fascination with these eight-legged creatures knows no bounds. There’s something utterly captivating about their intricate web-weaving capabilities, their exceptional survival strategies, and of course, their range of sizes and appearances. But amongst this vast collection of species, one has particularly piqued my interest – the Brazilian Wandering Spider.

Arguably one of the most notorious names in the world of arachnids, the Brazilian Wandering Spider, holds a firm position at the pinnacle of spider folklore. Their reputation extends far beyond their native tropical South American rainforests, captivating the minds of arachnologists and laymen alike around the globe.

What sets this spider apart in the arachnid world? It’s not just its venomous nature – it’s also its astonishing size. The dimensions of the Brazilian Wandering Spider are a spectacle in themselves.

How big are Brazilian Wandering Spiders?

Picture this: a spider so large that it could comfortably cover an average dinner plate. That’s right – the Brazilian Wandering Spider can grow to an impressive leg span of up to 7 inches , or approximately 18 cm, with females tending to be larger than the males.

To put this into perspective, that’s around half the size of an average adult human’s face! The body length of these spiders can reach up to 2 inches, or around 5 cm. This considerable size, coupled with their highly potent venom, makes them a formidable presence in their habitats.

But as an arachnid hobbyist, the allure of the Brazilian Wandering Spider’s size lies not in its potential threat, but in the fascinating evolutionary adaptations that have allowed it to grow to such an impressive scale.

The advantage of large size for a cursorial hunter

From an evolutionary standpoint, the Brazilian Wandering Spider’s significant size offers multiple advantages. For starters, their considerable size allows them to subdue and consume a larger variety of prey, including insects, other spiders, and sometimes even small amphibians and reptiles. This dietary diversity is a testament to their adaptability and survival prowess.

However, the size of these spiders is not solely an indicator of their hunting prowess. It also reveals a fascinating aspect of their biology. The Brazilian Wandering Spider, unlike some smaller spider species, does not weave a web to capture its prey. Instead, as their name suggests, they wander in search of food, relying on their size and strength to overpower their prey. This is called cursorial hunting .

Their size also plays a crucial role in their mating rituals. Male Brazilian Wandering Spiders, despite being smaller than their female counterparts, engage in a daring dance of danger during mating. They utilize their size and strength to lift the larger female’s body to prevent her from eating him – a gruesome but prevalent behavior known as sexual cannibalism in the arachnid world.

Size relates to the biology of the Wandering Spider

The Brazilian Wandering Spider’s size, therefore, is much more than just an intimidating factor. It’s a key to understanding their hunting methods, their mating rituals, and their overall survival strategy. Each inch adds to the mystique of these extraordinary creatures and deepens our understanding of the diverse world of arachnids.

The Brazilian Wandering Spider is undeniably a creature of fascination. From its substantial size to its potent venom, it’s a spider that demands respect. Whether you’re an arachnid hobbyist like me, or just someone intrigued by the wonders of the natural world, the Brazilian Wandering Spider offers a fascinating insight into the awe-inspiring world of arachnids.

Final thoughts…

In conclusion, the world of spiders is as vast and varied as the creatures themselves. The Brazilian Wandering Spider, with its impressive size, offers a fascinating window into this world. It’s a testament to the incredible diversity of life on Earth and a reminder of the intricate balance that governs our ecosystems.

My fascination with spiders continues to grow, much like the impressive size of the Brazilian Wandering Spider. And while their size may be a source of fear for some, for me, it only fuels my passion and curiosity about these fascinating creatures. After all, understanding is the first step to appreciation, and these giant spiders deserve nothing less.

Whether you’re a fellow arachnid enthusiast or just passing by, I hope this deep-dive into the size of the Brazilian Wandering Spider has sparked your curiosity. So the next time you hear about this giant spider, remember, there’s more to its size than meets the eye!

If you’d like to learn more about these spiders, check out my article on Brazilian Wandering Spider facts .

FAQ related to Brazilian Wandering Spider Size

How bad is a brazilian wandering spider bite.

A Brazilian Wandering Spider bite is considered a medical emergency. If you have a suspected or confirmed bite, your first move should be to contact the emergency services. Upon reaching you, they will determine whether to administer antivenom, and how to proceed with treatment. Fortunately, deaths are very rare, and the antivenom is widely available in South America.

Is a banana spider the same as a Brazilian wandering spider?

The common name of “Banana Spider” is used for a few species, not just the Brazilian Wandering Spider. For example, the Golden Silk Orb Weaver is often referred to as a banana spider, despite being completely unrelated. If you wish to find out if a spider is venomous, always rely on its scientific, or binomial name, rather than common names.

Where do Brazilian wandering spiders hide?

Brazilian Wandering Spiders are nocturnal hunters, and generally prefer to shy away from daylight. This means they often hide in the shadiest places they can find, either indoors or outdoors. For example, under a log or in leaf litter would be a perfect place outdoors. Indoors, they will try to hid behind or under furniture, or in dark corners.

What is the world’s biggest Brazilian wandering spider?

There are around 40 species of Wandering Spider, but the largest, and most infamous are those that we call the Brazilian Wandering Spider. This name is in fact commonly ascribed to two species: Phoneutria nigriventer and Phoneutria fera. Both of these spiders can reach at least 6 inches (15cm) in legspan.

Related Posts:

Leave a Comment Cancel Reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

• MORE Rabbits & Furry Friends Fish Horses Other Pets Random Article
• Rabbits & Furry Friends

How to Identify a Brazilian Wandering Spider

Last Updated: February 12, 2021 Approved

This article was co-authored by wikiHow Staff . Our trained team of editors and researchers validate articles for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. There are 8 references cited in this article, which can be found at the bottom of the page. wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, 93% of readers who voted found the article helpful, earning it our reader-approved status. This article has been viewed 133,493 times.

The Brazilian wandering spider is a large, hairy spider that lives in South and Central America. It’s considered the most venomous spider in the world. Since these spiders sometimes wander right into towns, cities, and shipments of fruit, it’s important to be able to recognize this spider and know its habitat. If you happen to be bitten, you should get immediate medical attention. Don’t panic, however! These bites can almost always be treated.

Recognizing a Brazilian Wandering Spider

• Some spiders may be more yellowish than brown. Others may appear to have black legs, or black bands on brown legs. [3] X Research source

• Do not try to trap this spider. Call animal control professionals if you think you have one in your home or outdoor buildings, and leave those buildings while you wait for help.

Being Aware of Their Habitats

• Small, unlit closets or nooks in homes
• Outdoor sheds and garages
• Unused clothes, shoes, or gloves
• Boxes of food in pantries
• Boxes in attics or garages

Avoiding a Bite

• If a spider falls out, don’t panic. Back away slowly and leave the area.

• You can also spray bug and spider repellant around doors and windows to ward off creepy crawlies.

Treating a Bite

• In men, these bites can also cause a long and painful erection.

Community Q&A

• Keep in mind that these spiders prefer to wander along the ground. Always wear sturdy shoes if you are in an area where these spiders are known to live. Thanks Helpful 2 Not Helpful 0
• These spiders are highly dangerous and should not be approached or provoked unless you are an expert such as an entomologist. They are recognized as one of the most dangerous spiders in the world and are the most venomous so they should always be treated with care and respect. Thanks Helpful 2 Not Helpful 0
• Children are more susceptible than adults to the venom of a Brazilian wandering spider, and you should ensure that any child who’s bitten gets medical attention as quickly as possible. Thanks Helpful 6 Not Helpful 0

You Might Also Like

• ↑ https://www.livescience.com/41591-brazilian-wandering-spiders.html
• ↑ http://www.wandering-spiders.net/phoneutria/gallery/
• ↑ https://animalcorner.co.uk/animals/brazilian-wandering-spider/
• ↑ http://bioweb.uwlax.edu/bio203/s2013/johnson_jor4/habitat.htm
• ↑ http://www.mayoclinic.org/diseases-conditions/spider-bites/manage/ptc-20204189
• ↑ https://www.livescience.com/37974-he-surprising-cause-of-most-spider-bites.html
• ↑ http://www.mayoclinic.org/first-aid/first-aid-spider-bites/basics/art-20056618
• ↑ http://www.webmd.com/first-aid/snakebite-treatment

About this article

To identify a Brazilian wandering spider, look for a spider with a long leg span of about 6 inches and a brown, hairy body. Also, carefully examine the spider from afar to see if it has large red fangs, which are common in Brazilian wandering spiders. Keep in mind that Brazilian wandering spiders only live in South and Central America. If you encounter one, move away slowly since Brazilian wandering spiders are aggressive and very poisonous. To learn how to avoid getting bitten by a Brazilian wandering spider, scroll down! Did this summary help you? Yes No

Reader Success Stories

Xhulia Xhaferri

Apr 5, 2016

Did this article help you?

Meradydd Scott

Apr 25, 2018

• About wikiHow
• Terms of Use
• Privacy Policy
• Do Not Sell or Share My Info
• Not Selling Info

Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

© 2015-2024 MorphMarket®

• Merchandise

Captive bred animals from thousands of breeders worldwide.

• Search forums
• Are you a Tarantula hobbyist? If so, we invite you to join our community! Once you join you'll be able to post messages, upload pictures of your pets and enclosures and chat with other Tarantula enthusiasts. Sign up today!
• Tarantula Forum Marketplace

US   Phoneutria - Brazilian Wandering Spider

• Thread starter KAZ10Z
• Start date Jul 5, 2019
• Jul 5, 2019

Attachments

• Jul 9, 2019

Herbert0051

Is this spider still available?  

Do you know the exact species of phoneutria this is and about how old it is?  

• Jun 12, 2020

Is the spider still available? Very interested.  

Well-Known Member

***I CANNOT STRESS HOW IMPORTANT IT IS TO RESEARCH THIS SPECIES!!! IT IS NOT FOR A BEGINNER!!!!*** @Herbert0051 @Stone1987  

Active Member

Is this legal to sell/buy? I'm in no way interested in it just curious as it's one of the most venomous spiders out there.  

BrokenRay said: Is this legal to sell/buy? I'm in no way interested in it just curious as it's one of the most venomous spiders out there. Click to expand...

Thanks for the warning. I am however well versed in these kind of spiders. They are just a pain in the ass to find in the United States for a decent price.  

Casey K. said: Yes, it's legal and yes, it is "the" most venomous spider in the world. I believe second in line is the Sydney funnel web spider.....don't quote me, though. Just research. Click to expand...

• Jun 16, 2020

Whitelightning777

I'm not probably ready to buy it but what is the temperment like? An OBT? A pokie? Would you also have a source for a double cage for safety reasons? (Cage within a cage)  

• Jun 18, 2020

Sorry, the Brazilians are no longer available.  

octanejunkie

• May 31, 2021

Itsybitsyspider

I love my Ts' but this particular spider I just assume kill.  

Latest posts

• Latest: Josh
• Yesterday at 6:06 PM

• Latest: thespiderroom
• Thursday at 4:22 PM

• Latest: EightDeadlySins
• Thursday at 3:15 PM

• Latest: Goldiesgiants
• Thursday at 6:00 AM

• Latest: Bex
• Wednesday at 12:44 PM

Can a Bite From a Brazilian Wandering Spider Cause a Four-Hour Erection?

In many cases, the erection is merely an early warning before the complete shutdown of multiple organ systems., alex kasprak, published aug. 16, 2023.

About this rating

On Aug. 14, 2023, the account First Doctor  posted what it asserted to be an "exclusive" finding on the social media platform X, formerly known as Twitter:

While far from an exclusive — or even a remotely new — finding, the two claims in the tweet were factual. A bite from Phoneutria nigriventer , commonly known as the Brazilian wandering spider, can indeed result in a long-lasting and painful erection, a condition known as priapism when it lasts more than four hours . 

While the toxicity and high risk of death posed by the chemical thought to be responsible for the erections makes its use as a potential erectile dysfunction (ED) therapy challenging, if not literally impossible , it has been used to develop similar chemicals that may have therapeutic potential. 

Phoneutria nigriventer 's erection-causing effects have been known to science since the 1970s. The 1971 book "Venemous Animals and Their Venom" described priapistic effects of this spider's bite on mice and dogs. The authors also included anecdotal reports from humans who had been bitten:

A pattern which resembles that of dog envenomation is also noticed in humans bitten by Phoneutria nigriventer: local unbearable pain, salivation, visual disturbances, sweating, prostration, priapism, and death. 

Research published in 2008 identified the chemical within the venom likely responsible for the erections — a peptide now named PnTx2-6. "[Pn]Tx2-6 enhanced erectile function in [...] rats, via the [Nitrous Oxide] NO pathway," the study reported. "Our studies suggest that [Pn]Tx2-6 could be important for development of new pharmacological agents for treatment of erectile dysfunction."

The interest in this toxin as a treatment for ED stems, in part, because it operates in a completely different way than common ED treatments like Viagra, as reported in 2011 by NBC News:

Viagra, Levitra and other ED drugs on the market work by inhibiting an enzyme called PDE5. To get an erection, a man's body must release nitric oxide, which relaxes the smooth muscle around the arteries of the penis, allowing for his blood vessels to dilate. The nitric oxide is a first step in a series of chemical reactions that allow this muscle relaxation to take place.  One step in the series is cGMP, a signaling molecule that acts to keep the muscles relaxed. PDE5 degrades cGMP. That's a good thing for ensuring that erections don't last forever, but too much PDE5 can mean an erection doesn't happen at all. By blocking the enzyme, PDE5 inhibitors solve the problem. The spider toxin works differently. Instead of affecting PDE5, the compound seems to trigger nitric oxide release, acting directly to relax the smooth muscles. Because about 30 percent of patients don't respond to PDE5 inhibitors, the toxin could provide an alternative to ED treatments currently on the market, [Study author Kenia] Nunes said." 

In 2022, the same research group responsible for identifying PnTx2-6 published a paper arguing, in part, that due to the extreme pain and high toxicity of the chemical, its "therapeutic use is impossible," but that it is "an excellent pharmacological tool for studying erectile function." That study synthesized a new peptide, PnPP-19, based on the toxic original.

Based on studies performed on laboratory mice, PnPP-19 appears to have the potential to cause erections without the pain or toxicity of the spider venom:

This synthetic peptide also potentiates erectile function via NO/cGMP, but it [...] displays nontoxic properties in animals even at high doses. PnPP-19 effectively potentiates erectile function not only after subcutaneous or intravenous administration but also following topical application.

The assertions in First Doctor's post were factual because the priapism caused by Phoneutria nigriventer's bites have been well-documented and well-studied for decades and because the active ingredients in that venom have been used to investigate new ED therapies. As such, we rate the claim as "True."

Bücherl, Wolfgang, and Eleanor E. Buckley. Venomous Animals and Their Venoms: Venomous Invertebrates. Elsevier, 2013.

Nunes, K. P., et al. "Tx2-6 Toxin of the Phoneutria Nigriventer Spider Potentiates Rat Erectile Function." Toxicon : Official Journal of the International Society on Toxinology, vol. 51, no. 7, June 2008, pp. 1197–206. PubMed Central, https://doi.org/10.1016/j.toxicon.2008.02.010.

Silberman, Michael, et al. "Priapism." StatPearls, StatPearls Publishing, 2023. PubMed, http://www.ncbi.nlm.nih.gov/books/NBK459178/.

Silva, Carolina Nunes da, et al. "From the PnTx2-6 Toxin to the PnPP-19 Engineered Peptide: Therapeutic Potential in Erectile Dysfunction, Nociception, and Glaucoma." Frontiers in Molecular Biosciences, vol. 9, 2022. Frontiers, https://www.frontiersin.org/articles/10.3389/fmolb.2022.831823.

"Spider Venom Shows Promise for Treating Erectile Dysfunction." NBC News, 7 Sept. 2012, http://www.nbcnews.com/health/health-news/spider-venom-shows-promise-treating-erectile-dysfunction-flna1B5794477.  

By Alex Kasprak

Alex Kasprak is an investigative journalist and science writer reporting on scientific misinformation, online fraud, and financial crime.

Article Tags

• Cell Phones & Accessories
• Accessories

Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime Try Prime and start saving today with fast, free delivery

Amazon Prime includes:

Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.

• Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
• Unlimited Free Two-Day Delivery
• Streaming of thousands of movies and TV shows with limited ads on Prime Video.
• A Kindle book to borrow for free each month - with no due dates
• Listen to over 2 million songs and hundreds of playlists
• Unlimited photo storage with anywhere access

Important:  Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.

Return this item for free

Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges

• Go to your orders and start the return
• Select the return method

Image Unavailable

• To view this video download Flash Player

Brazilian Wandering Spider Phoneutria Fera PopSockets Grip and Stand for Phones and Tablets

Purchase options and add-ons

About this item.

• The Brazilian wandering spider aka Armed Spider or Banana Spider is a genus of venomous spider of the Phoneutria genus and Ctenidae family of spiders
• Some say the Brazilian Wandering Spider is one of the most poisonous spiders in the world. Usually found in South America.
• PopGrip with swappable top; switch out your PopTop for another design or remove it completely for wireless charging capabilities. (Not compatible with Apple MagSafe wireless charger or MagSafe wallet.)
• Expandable stand to watch videos, take group photos, FaceTime, and Skype handsfree.
• Advanced adhesive allows you to remove and reposition on most devices and cases.
• Note: Will not stick to some silicone, waterproof, or highly textured cases. Works best with smooth, hard plastic cases. Will adhere to iPhone 11, but not to the iPhone 11 Pro nor the iPhone 11 ProMax without a suitable case.

More products with this design

What's in the box

Looking for specific info, product information, product description.

What are PopSockets? PopSockets are expanding grips and stands that attach to most phones, tablets, and cases. Add a single PopSocket, or a pair of PopSockets, to the back of almost any mobile device to transform its capabilities. PopSockets "pop" whenever you need a grip, a Stand, an earbud-management system, or just something to play with. Remove your PopSocket by Pulling slowly on the base; you can reposition and Reattach time and time again. You'll always have the exact grip or Stand you need.

Customer reviews

Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.

To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.

No customer reviews

• Amazon Newsletter
• About Amazon
• Accessibility
• Sustainability
• Press Center
• Investor Relations
• Amazon Devices
• Amazon Science
• Sell on Amazon
• Sell apps on Amazon
• Supply to Amazon
• Protect & Build Your Brand
• Become an Affiliate
• Become a Delivery Driver
• Start a Package Delivery Business
• Advertise Your Products
• Self-Publish with Us
• Become an Amazon Hub Partner
• › See More Ways to Make Money
• Amazon Visa
• Amazon Store Card
• Amazon Secured Card
• Amazon Business Card
• Shop with Points
• Credit Card Marketplace
• Reload Your Balance
• Amazon Currency Converter
• Your Account
• Your Orders
• Shipping Rates & Policies
• Amazon Prime
• Returns & Replacements
• Manage Your Content and Devices
• Recalls and Product Safety Alerts
• Conditions of Use
• Privacy Notice
• Consumer Health Data Privacy Disclosure
• Your Ads Privacy Choices

• Weird But True
• Sex & Relationships
• Viral Trends
• Human Interest
• Fashion & Beauty
• Food & Drink

trending now in Lifestyle

Forget 10,000 steps a day — here's what to focus on instead

Comments on influencer's 'hot' bikini pic sends her into a...

TikTokker reveals little-known detail in the 7-Eleven logo: 'How...

Hairstylist reveals the top 10 'icks' people do when they get...

Dear Abby: I love my boyfriend's family, except his rapist brother

Brazen couple has sex romp in packed NYC park in full view of...

My husband said he wants to divorce because I breastfed my son:...

Influencer slammed for wearing ball gown to best friend's wedding...

Supermarket shut down due to spider that can cause long, painful erections.

• View Author Archive
• Get author RSS feed

Thanks for contacting us. We've received your submission.

Everyone split!

A supermarket in Austria shuttered this week after a venomous Brazilian wandering spider was spotted wandering in the bananas, TMZ reported , citing fears that a bite from the deadly creature can cause long-lasting, painful erections.

The Penny market in Krems an der Donau — which is about 45 minutes west of Vienna, the nation’s capital — has reportedly been closed since Tuesday.

The store manager allegedly rang the fire department after spotting the 4-inch black-and-red creepy crawly. Helpers sealed the store’s banana crates, but the spider is still at large, per The Mirror .

The Brazilian wandering spider’s venom “stimulates” an erection that lasts for hours, according to Live Science .

Those who are bitten by the spider can suffer high blood pressure and pain throughout their bodies.

“The erection is a side effect that everybody who gets stung by this spider will experience along with the pain and discomfort,” said Dr. Romulo Leite of the Medical College of Georgia, who has studied the spider .

“We’re hoping eventually this will end up in the development of real drugs for the treatment of erectile dysfunction.”

In 2012, Smithsonian Magazine suggested the spider could work as the next Viagra, to help men who have erectile disfunction. But it doesn’t seem like this idea has legs, as of yet.

This is not the first time this type of venomous spider has wandered to Europe.

In May 2017, “hundreds” of the spiders infiltrated someone’s bananas they had purchased from the supermarket Asda in the UK, according to The BBC.

The spiders spurred the family to evacuate their home.

In the spring, a UK man reported finding a painful and venomous — but not deadly — Huntsman spider in his bananas from the Tesco grocery store.

“I don’t think I’ve ever had a shock horror reaction like it before. I was completely gobsmacked to discover it,” Craig Harrison told Caters, adding it “gave me the fright of my life.”

Share this article:

Advertisement

• Updated Terms of Use
• New Privacy Policy
• Your Privacy Choices
• Closed Caption Policy
• Accessibility Statement

This material may not be published, broadcast, rewritten, or redistributed. ©2024 FOX News Network, LLC. All rights reserved. Quotes displayed in real-time or delayed by at least 15 minutes. Market data provided by Factset . Powered and implemented by FactSet Digital Solutions . Legal Statement . Mutual Fund and ETF data provided by Refinitiv Lipper .

Deadly Brazilian wandering spiders found in bananas sold at Tesco grocery store, family claims

Fox News Flash top headlines for May 5

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com.

Get all the latest news on coronavirus and more delivered daily to your inbox.  Sign up here.

An apple a day keeps the doctor away. A banana full of deadly spiders won’t work out as well.

A woman says she found an egg sac full of deadly spiders on some bananas she had recently purchased from a grocery store. While no one was hurt in the incident, her home reportedly needs to be sealed and fumigated for two weeks to make sure none of the deadly arachnids are still lingering around.

The spiders were reportedly identified as Brazilian wandering spiders. (iStock)

Melanie Price says she saw 20 spiders swarming from an egg sac on a bunch of bananas she had just purchased from a Tesco in Wadebridge, England, The Sun reports. When the mom noticed the spiders, she reportedly grabbed her husband, 3-year-old son and 11-month-old daughter and ran outside.

CLICK HERE TO SIGN UP FOR OUR LIFESTYLE NEWSLETTER

The spiders were reportedly identified as Brazilian wandering spiders, one of the most venomous in the world, according to Live Science . If left untreated, a bite from one of these spiders can be deadly, especially to children.

Pest controllers have sealed off the family’s home for two weeks to make sure none of the spiders are still living in the area, The Sun reports.

“They take two hours to kill a human. It was terrifying,” Price told The Sun. “We had to make sure the kids were safe, that comes above anything. It was a hard 48 hours, I can assure you.”

FOLLOW US ON FACEBOOK FOR MORE FOX LIFESTYLE NEWS In a statement obtained by The Sun, a spokesperson for Tesco said, “We have strict controls to ensure all our bananas are washed and inspected prior to packing. However, on extremely rare occasions, pests can avoid detection.”

Fun stories about food, relationships, the great outdoors and more.

You've successfully subscribed to this newsletter!