Sphodros niger, the black purse-web spider, is a mygalomorph spider from the Eastern United States.

[1] It is listed as a special concern species in Connecticut.

The body is black, except for chocolate-brown legs.

[3] This results from the male's behavior of wandering about in search of mates, while females, which reside in tubes, are rarely found.

The species name niger is Latin for "black".