|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. This key was modified from the key on page 42.
Good LinksKey to Male Zapada
Key to Female Zapada
Brown, Wendy S. 2004 Plecoptera or Stoneflies of Gunnison County, Colorado