Wikipedia
Chumma
Chumma is a spider genus with only two described species, . The genus is the only one in the family Chummidae. Both species were first described in 2001 and are known from males and females.
They are small, three-clawed spiders with a strong dorsal scutum. They have no fovea, and the posterior and median spinnerets are reduced. The males of C. gastroperforata have two pairs of abdominal pockets, which play a role in mating.