Chelicerata

Arachinida

Araneae

Araneomorphae

Entelegynae

Lycosoidea

Ctenidae(wandering spiders)
Phoneutria
Phoneutria nigriventer (Brazilian armed spider)

Scorpiones(scorpions)

Buthoidea

Tityus

Tityus bahiensis
Tityus serrulatus(Brazilian scorpion)
Tityus stigmurus