Sasquaperla hoopa, a new stonefly genus and species from northern California (Plecoptera : Chloroperlidae)

Sasquaperla hoopa, a new genus and species of Chloroperlidae, is described from adults and preemergent nymphs collected in the Coast Range of northern California. Males are characterized by the epiproct reduced to a small, ta blike structure bearing stiff hairs in a narrow band along the posterior ma rgin. Females are similar to those of Sweltsa, but the nymphs bear several erect bristles lateral to depressed hair patches on the mesosternum. Modifi ed keys are presented for adults and nymphs.