The geuns Phoneutria is found in southern Central America, and down throughout most of South America including east of the Andes and down into Argentina. Specifically P. fera is restricted to the Brazilian rainforest area, as well as the more urban areas of Brazil but also up into northern South America. This spider has a wandering nature which commonly causes it to find cover in dark places during the day time which may result sometimes in them taking refuge in houses, clothes, cars, shoes, food boxes, and brush piles. These spiders are thought to be native to Sao Paulo, Brazil but were then introduced to new habitats by transported wood. In the map provided the red area shows the habitat of the Phoneutria genus while the purple area shows the more refined habitat of the P. fera, however other species of Phoneutria live in these areas as well.

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