1a. Cervical gills 12-15 times as long as wide. Found in small headwater streams and spring fed creeks. Not reported from the county, but may be present. | |
1b. Cervical gills less than 10 times as long as wide. | |
2a. Gills with 3 or 4 branches. | |
2b. Gills simple and unbranched.
You can barely see the ring of setae on both forelegs of this animal. |
ReferencesBaumann, RW Gaufin, AR, Surdick, RF 1977: The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208. PDF This key was modified from the key on page 42.Good LinksKey to Male ZapadaKey to Female Zapada |