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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Ihunta
Virginia

Posts: 2
Ihunta on Feb 17, 2018February 17th, 2018, 9:53 am EST

Found this in SW VA stream that's cold and clean. It was under cobbles in a lotic erosional zone, and had gills on 4 or 5 of its abdominal segments.
Millcreek
Healdsburg, CA

Posts: 344
Millcreek on Feb 17, 2018February 17th, 2018, 12:21 pm EST
It's a burrowing mayfly, probably either a member of the family Ephemeridae or Potamanthidae.

https://bugguide.net/node/view/614206

https://bugguide.net/node/view/182024/bgimage
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Ihunta
Virginia

Posts: 2
Ihunta on Feb 17, 2018February 17th, 2018, 12:39 pm EST
Ohh, that makes sense with the 3 cerci and the "horns". The multiple tarsal claws and overall size tripped me up, but I'm glad I found one before the lab practical exam!

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