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.

Turquoise view of Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

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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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Freestone Mixed stream

Jcatt72 has attached these 3 pictures to aid in identification. The message is below.

Jcatt72
Centre County, Pennsylvania

Posts: 1

Jcatt72 on Jun 22, 2012June 22nd, 2012, 2:46 pm EDT

Have a few pics of some bugs that were coming off the stream here in June.

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Jun 23, 2012June 23rd, 2012, 5:24 am EDT

E varia on top. And a male Baetid below.

Entoman

Northern CA & ID

Posts: 2604

Entoman on Jun 23, 2012June 23rd, 2012, 9:44 am EDT

E varia on top. And a male Baetid below.

I agree. The eyes look to be turbinate on the latter, which would preclude the ephemerellids. As to the former, definitely Ephemera. As to species, I'd be interested in Gonzo's take as there are several similar ones in that region.

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Jun 23, 2012June 23rd, 2012, 11:06 am EDT