Big Mayfly...ID Help!!

FinLuver

Active Member
Big Mayfly at Winchester Dam on the N Umpqua, May 27, 2016.
It's was a big'n too. P5270030.JPG
Light shinin' through it...
P5270031.JPG
Pocket Knife (3.5" approx.) for reference...
P5270025.JPG
Direct sunlight...

Thanks for the help.
 

Buzzy

Active Member
Hexagenia Limbata.JPG
Amateur entomologist here: Hexagenia Limbata is my guess. This one was from the Columbia River near Priest Rapids.
 
Last edited:

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