Brazilian Wandering Spider, the Most Poisonous Spider in the World

May 9th, 2011 by admin | Filed under animal, science.

The Brazilian Wandering Spider is the most poisonous spider in the world. This highly aggressive spider can be found in tropical South and Central America. They are so called “wandering spiders” because they wander the forest floor at night in search of food, rather than reside in a lair or in a web.

Brazilian wandering spider - world's most poisonous spider

Brazilian wandering spider – world’s most poisonous spider. Image via

This spider specie is also called armed spiders or banana spiders. Their venom contains a potent neurotoxin known as PhTx3. This neurotoxin causes loss of muscle control and breathing problems which can result to paralysis and eventually asphyxiation to any victim. This deadly venom makes the Brazilian wandering spider the deadliest spider in the world and appeared in the Guinness Book of World Record in 2010 as such.

Brazilian Wandering Spider close-up

Brazilian Wandering Spider close-up. Image via

Brazilian wandering spider sitting in a tree bark

Brazilian wandering spider sitting in a tree bark. Image via

In 2007, doctors found out that this specie’s venom has another effects to male victims. Aside from the painful effect of the venom, males also experience hours-long erection. They later found out that the venom contains a chemical that inhibits the penis boost.

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