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The Specimen

Sweltsa onkos (Sallfly) Stonefly AdultSweltsa onkos (Sallfly) Stonefly Adult View 8 PicturesI'm just guessing this is Chloroperlidae, since it's little and yellow. If anyone has a less haphazard identification, feel free to post it.
Collected May 15, 2007 from Mystery Creek #62 in New York
Added to Troutnut.com by on May 18, 2007

The Discussion

GONZOSeptember 9th, 2008, 7:36 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
I believe this is probably Sweltsa onkos. There are three Sweltsa species commonly listed for most of the Northeast (onkos, naica, and lateralis), and their individual pronotum/head markings seem rather distinctive.

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