Are Banana Spiders Poisonous or Venomous?

Banana Spiders

There are a variety of spider species referred to as banana spiders so the answer to whether they are venomous depends on the species of spider you are referring to. The most common spider species referred to as banana spiders are the golden silk orb-weaver spiders, the Cupiennius, and the Brazilian wandering spiders.

Golden Silk Orb Weaver Spiders

These spiders are known for their impressive webs and distinctive colorings. Their body color may vary from red to greenish yellow. The golden silk orb weaver spiders are venomous but the venom is not thought to be lethal. Those who get bitten by these spiders may develop symptoms like redness and blistering. They are pretty harmless despite their scary appearance.


Cupiennius spiders are also known for being mildly venomous. Those who have been bitten by these banana spiders have compared the level of pain as same as a bee sting. There are eleven identified species of Cupiennius including the Cupiennius bimaculatus, Cupiennius coccineu, and Cupiennius granadensis. Many of these spiders are found in central American countries including Costa Rica.

Brazilian Wandering Spider

This is the banana spider you want to avoid. The Brazilian wandering spider is thought of as one of the most venomous spiders in the world. Those who get bitten by a Brazilian wandering spider may experience initial symptoms like severe burning pain and swelling. It’s important that you get immediate medical attention if you get bitten by this type of banana spider.

With the exception of the Brazilian wandering spider, there are benefits to having the non-venomous species, such as the Golden Silk Orb Weaver, around. These spiders, for example, may help control pests that plague your home during the hot weather. If you plan on getting rid of the spiders then please do so with care.