Brazilian wandering spider
Quick Summary
The Brazilian wandering spider, belonging to the genus Phoneutria, is a large, venomous, and nocturnal arachnid native to tropical South America. These spiders are active hunters that travel on the ground rather than building webs to catch prey. They are known for their aggressive defense posture, characterized by raising their front legs into the air.12
While sometimes called banana spiders due to their frequent presence on banana leaves, their bite is medically significant to humans. The venom of Phoneutria species is toxic to the nervous system, potentially causing symptoms like salivation, irregular heartbeat, and prolonged, painful erections (priapism). However, deaths from their bite are rare. Scientists are exploring the venom of P. nigriventer for potential medical applications, such as treating erectile dysfunction.12
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