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> > What is this species of stonefly?

Simon has attached this picture to aid in identification. The message is below.
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SimonJanuary 2nd, 2022, 1:04 pm
Posts: 3I did some stonefly collecting yesterday in the Adirondacks and found this one. It's quite small, a size 14-16 hook, and I was wondering what was the species of this stonefly. The antennas and tails are pretty long though. Thank you to anyone who may know the answer!
TaxonJanuary 2nd, 2022, 10:55 pm
Site Editor
Plano, TX

Posts: 1343
Hi Simon-

I believe this stonefly nymph to be of family Nemouridae (The Forestflies). If I were to take a guess as to genus and species, it would be Prostoia similis, which has a common name of Longhorn Forestfly, and is one of the (10) Nemourids known to reside in New York.

Please see link to Troutnut website Prostoia nymphal photos.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
SimonJanuary 3rd, 2022, 4:06 pm
Posts: 3Do you believe it could be in the Taeniopterygidae family?
TaxonJanuary 3rd, 2022, 7:35 pm
Site Editor
Plano, TX

Posts: 1343
I cannot rule out the Taeniopterygidae family; spent considerably time vacillating between those two families before deciding to just give you my best guess.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

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