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Stoneflies - Plecoptera: Chloroperlidae of Gunnison County, Colorado

Alloperla Male key to species

1a. Apex of epiproct smoothly rounded; entire apex densley pilose (difficult to see with an ordinary dissecting microscope); stripe on back of abdomen; Higher elevations. Alloperla pilosa
1b. Epiproct apex rounded with shallow crenulations; apical half of epiproct bare, densely pilose in basal half; abdomen boring, no stripe. Alloperla_thalia


Baumann,RW and Kondratieff, BC 2008 The Alloperla severa complex (Plecoptera: Chloroperlidae) of western North America. Illiesia 2008 4(6):66-75. PDF
     The authors split Alloperla severa into three species A. severa, A. elevata and A. thalia. Alloperla thalia is present in Colorado so may be found in Gunnison County. Alloperla severa may not be present in Colorado so I have some revising to do on this website!

Lyon,ML and Stark,BP 1997 Alloperla (Plecoptera: Chloroperlidae) of western North America. Entomological News 108 5, 321-334.

Good Links

Key to Male Alloperla
Key to Female Alloperla
Brown, WS 2004 Plecoptera or Stoneflies of Gunnison County, Colorado