Arcynopteryx compacta Stonefly Nymph Pictures
Classification
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Plecoptera (Stoneflies)
» Family Perlodidae (Medium Browns and Yellows)
» Genus Arcynopteryx
» Species compacta
This stonefly was collected from the Catskills on April 19th, 2006 and added to Troutnut.com on April 22nd, 2006.
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Recent Discussions of this Nymph
Anybody know the genus and species? 1 Reply »
This stonefly comes from a fertile, cold small stream in the Catskills. I tried to ID it using the key to genera in Merritt & Cummins but I ended up with a fairly confident identification that can't be correct: Arcynopteryx, a western mountain genus. So I'm stuck at couplet 89 in the M&C key.
ReplyArcynopteryx 1 Reply »Jason-
Not to despair; this is what American Stoneflies: A Photographic Guide to the Plecoptera by Bill P. Stark, Stanley W. Szezytko, and C. Ridley Nelson has to say about genus Arcynopteryx:
"This genus is represented in North America by A. compacta (McLachlan). This species ranges from Alaska to Maine and has been reported as far south as Colorado. Males usually have shortened wings and are easily recognized by the long, lash-like epiproct tip. Females and nymphs are quite similar to Skwala. A. compacta has been collected around alpine lakes in the northern Rocky Mountains. No photographs are available for this group."
Also, Arcynopteryx compacta is listed by Stark/Baumann as residing in New York.
ReplyNot to despair; this is what American Stoneflies: A Photographic Guide to the Plecoptera by Bill P. Stark, Stanley W. Szezytko, and C. Ridley Nelson has to say about genus Arcynopteryx:
"This genus is represented in North America by A. compacta (McLachlan). This species ranges from Alaska to Maine and has been reported as far south as Colorado. Males usually have shortened wings and are easily recognized by the long, lash-like epiproct tip. Females and nymphs are quite similar to Skwala. A. compacta has been collected around alpine lakes in the northern Rocky Mountains. No photographs are available for this group."
Also, Arcynopteryx compacta is listed by Stark/Baumann as residing in New York.
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