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Stoneflies - Plecoptera: Perlodidae of Gunnison County, Colorado
Isogenoides Male key to species

Updated 28Mar2005                
1a. Apical hook present at tip of epiproct.

1b. Apical hook absent at tip of epiproct.


Baumann,RW, Gaufin,AR and Surdick,RF 1977 The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society 31, 1-208.

Good Links

Key to Isogenoides Females of Gunnison County
Key to Isogenoides Nymphs of Gunnison County
Brown, Wendy S. 2004 Plecoptera or Stoneflies of Gunnison County, Colorado