Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana

Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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Doroneuria baumanni (Golden Stone) Stonefly Nymph Doroneuria baumanni (Golden Stone) Stonefly Nymph

Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Sears Creek in Washington

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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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Big Spinner

Al514 has attached these 2 pictures to aid in identification. The message is below.

Al514

Central New York

Posts: 142

Al514 on Jun 18, 2007June 18th, 2007, 3:43 pm EDT

these covered the water tonight. what does everyone think?

Wiflyfisher

Wisconsin

Posts: 622

Wiflyfisher on Jun 18, 2007June 18th, 2007, 3:56 pm EDT

My wild guess would be an Epeorus spinner.

John S.
https://WiFlyFisher.com

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jun 18, 2007June 18th, 2007, 4:10 pm EDT

I don't think it's Epeorus, because the eyes would be closer together in that genus. It's certainly in the Heptageniidae family, but I wouldn't be able to really narrow it down beyond that.

It would help if you've got a picture showing the entire fore legs.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Konchu

Site Editor
Indiana

Posts: 498

Konchu on Jun 18, 2007June 18th, 2007, 5:45 pm EDT

yeah to what troutnut said

could be Rhithrogena, based on wing venation (anastomies), abdomen color (generally reddish, but I'm not sure about some of the markings) and femoral maculation (median dark blotch)

the dark wing veins are reminiscient of some other genus, perhaps, but I'm drawing a blank at this hour when my mind is numb...take what I say with a grain of salt however