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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.

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.

Agnetina flavescens (Golden Stone) Stonefly Nymph Pictures

I took a few closeup pictures of this stonely with my old camera and a microscope.

Dorsal view of a Agnetina flavescens (Perlidae) (Golden Stone) Stonefly Nymph from Fall Creek in New York
Agnetina flavescens (Perlidae) (Golden Stone) Stonefly Nymph from Fall Creek in New York
Agnetina flavescens (Perlidae) (Golden Stone) Stonefly Nymph from Fall Creek in New York

This stonefly was collected from Fall Creek in New York on November 15th, 2004 and added to Troutnut.com by Troutnut on April 12th, 2006.

Discussions of this Nymph

Moved to Agnetina capitata
Posted by Entoman on Apr 8, 2013
Last reply on Apr 8, 2013 by Entoman
The occipital ridge shows this specimen to be in the subfamily Perlinae. The distinctive head markings connote a form of Agnetina capitata I've seen in photos of Midwestern specimens. I'm not positive on this one as I can't vouch for the accuracy of the photos compared with it, but I hated to see this guy languish on the family page when it's clearly Perlinae.

Compare the pronotal and head markings with this specimen. Heck, the whole dorsum is a good match. It seems a credible site.
http://www.shl.uiowa.edu/env/limnology/macroinvertebrates/Plecoptera/Perlidae/Agnetina%20capitata16x12.jpg

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Agnetina flavescens (Golden Stone) Stonefly Nymph Pictures

Collection details
Location: Fall Creek, New York
Date: November 15th, 2004
Added to site: April 12th, 2006
Author: Troutnut
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