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Stoneflies - Plecoptera: Taeniopterygidae of Gunnison County, Colorado
Male key to Genera

1a. Basal plate of epiproct fully sclerotized with two erect lobes; epiproct prong slightly asymmetrical.
1b. Basal plate of epiproct with large membranous spaces and lacking lobes; epiproct prong symmetrical.

References

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 Taeniopterygidae Females of Gunnison County
Key to Taeniopterygidae Nymphs of Gunnison County
Brown, Wendy S. 2004 Key to the Aquatic Insects of Gunnison County, Colorado
www.gunnisoninsects.org