| 1a. Cerci (tails) with a dense fringe of long lateral setae. | |
| 1b. Cerci without dense fringe of long setae. | |
| 2a. Lacinia with a single weakly sclerotized cusp; average number of cercal segments is 17. | |
| 2b. Lacinia with 2 sharp cusps; average number of cercal segments is 25. |
Good LinksIntro CapniidaeKey to Male Capniidae Key to Female Capniidae ReferencesNelson,RC; Baumann,RW 1989 Systematics and distribution of the winter stonefly genus Capnia (Plecoptera: Capniidae) in North America. Great Basin Naturalist 49, 289-363. PDF |