Interesting facts about Brazilian Valens

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We found 15 interesting facts about Brazilian Valens

They are stowaways and they bite

These spiders can be found in forested areas of South and Central America. They actively hunt small animals, which they then paralyze with their venom. 

This is one of the few species of spiders whose venom can also be dangerous to humans. Because they prefer to hide in the leaves of some tropical fruits, there is a risk that they may show up in grocery stores even thousands of miles from where they originate.


The Brazilian wandering spider is a genus of spider native to South and Central America.

There are currently nine species of spiders in this genus. 


These spiders are known in Poland mainly because they sometimes appear in bananas sold in supermarkets.

Although they are dangerous to humans, remember that not every spider found in a bunch of bananas will be a wandering spider. In fact, the chance of transporting them to another continent is very small. 

Studies of spiders found in shipments to North America showed that only 7 ze 135 in recorded cases actually turned out to be a representative of the Brazilian Valensac. Of these, six spiders were representatives of the species Bolivian phonetry and one Phonetria nigriventer.


The name Valensak comes from their way of life.

These are the spiders that they don't spin webs, but they roam the earth in search of prey. Are active at night, and during the day they rest in burrows, burrows, under stones or in fruit leaves.

Some species live only in forests, while others, e.g. Phonetria nigriventer they also do well near populated areas. 


They are also called banana spiders.

they are common on plantations where they hide in the hollows of banana leaves. With so many fruits being prepared for export, it is almost impossible to guarantee that not a single individual will end up in the packing house. 


They live in tropical and subtropical climates.

The northernmost region of their distribution is Costa Rica. Their range covers most of South America up to roughly parallel to longitude 25°E, i.e. northern Argentina..


Even though the bananas are transported in refrigerated trucks, the conditions are not so unfavorable as to kill them.

The optimal temperature for transporting bananas is 13,2 – 14°C; it will not cause death, but will only slow down life activity.


During storage and transportation, females are able to weave a cocoon and lay eggs.

A container ship transporting bananas from South America to Europe takes anywhere from a week to even several weeks. 

Green bananas are packaged in special sealed packaging that allows them to be stored for up to 40 days. During this time, the females who find themselves inside can have time to lay eggs, and sometimes even from eggs. the young ones will hatch. Little Wanderers they take 4 to 5 weeks to hatch.


Even if the Brazilian Walesa is dragged to Poland and released, he has no chance of survival.

These spiders require high temperatures, which the Polish climate cannot provide. 


Depending on the type, Brazilian Valens can reach sizes from 17 to 50 millimeters.

The distance between the legs ranges from 13 to 18 centimeters.


Their characteristic features are heavily pubescent pedipalps and a massive long body.

When they meet, their behavior can also help in identification. In an emergency they raise their front legs high, straighten the body and begin to sway to the sides.


In Poland, a representative of the genus Phoneutria was also found in one of the Biedronka stores.

In Milic on December 15, 2014, one of the buyers discovered a large spider with a cocoon in a box of bananas. Luckily, no one was bitten. the spider was caught into a jar, and the cocoon with potential offspring was secured. Most likely it was a representative Phonetria depilata.


The most common foulbrood beetle found in bananas is Phoneutria boliviensis.

The body length of this species is diameter from 30 to 40 mm (females are larger), the leg span can reach 13 см. Bites usually affect the arms and legs. they are rarely dangerous, these spiders often bite without injecting venom, and only 13% of bites examined had visible puncture marks. 

To learn more …


The risk of death from a bite from these spiders is low, especially outside of South America.

Bolivian phonetry is the most commonly found Brazilian wandering beetle in transport, and no deaths from a bite from this species have yet been recorded.


The Brazilian wandering beetle bites about four thousand people every year.

As a result, only 0,5% of people bitten suffer serious health complications. Mortality is even rarer, having only been recorded since 1903. fifteen deaths.

Keep in mind that Children are most at risk of serious consequences from bites.


The bite of the Brazilian wandering worm can cause priapism.

This condition causes men to experience prolonged and painful erections that are in no way caused by sexual arousal. When bitten by these spiders, symptoms may persist. until five o'clock.

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