Brazilian wandering spider

The Brazilian wandering spider is a common name for spiders in the genus *Phoneutria*, a group of venomous wandering spiders in the family Ctenidae.

The Brazilian wandering spider is a common name for spiders in the genus *Phoneutria*, a group of venomous wandering spiders in the family Ctenidae. The name is used for several species native to Central and South America, including *Phoneutria nigriventer* and *Phoneutria fera*. They are known for their nocturnal roaming behaviour and medically significant venom.

Taxonomy

Brazilian wandering spiders belong to the genus *Phoneutria* in the family Ctenidae. The common name is used for several species rather than a single species.

Distribution and habitat

Members of the genus occur in Central and South America. They are associated with forest habitats and can also be found near human environments, including plantations and urban areas.

Behaviour

These spiders are active hunters that roam at night instead of building capture webs. They are known for a defensive posture that makes them appear larger when threatened.

Venom and medical significance

*Phoneutria* venom is neurotoxic and can produce symptoms such as pain, salivation, irregular heartbeat, and, in some cases, priapism. Bites can be serious, but fatalities are rare with prompt treatment.