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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.

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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.

Female Claassenia sabulosa (Golden Stone) Stonefly Adult Pictures

I think this is one of the most poorly understood of the golden stoneflies. It is rare to see any articles about it or fishing the hatch. It emerges late in summer usually on medium to large rivers.The adults are quite secretive but it is something to see the adults run across the water surface. These guys can really run. The males have short wings.The females are up to 1 1/4 inch long rivaling the salmonfly as the largest adult stonefly in the west.The adults are not real golden in color, especially the females which are more of an off yellow to off white abdomen. In handling the adults it is obvious that they shun direct sunlight. I find them by turning over rocks close to the water's edge.

Female Claassenia sabulosa (Perlidae) (Golden Stone) Stonefly Adult from the Touchet River in Washington
Female Claassenia sabulosa (Perlidae) (Golden Stone) Stonefly Adult from the Touchet River in Washington
Female Claassenia sabulosa (Perlidae) (Golden Stone) Stonefly Adult from the Touchet River in Washington

This stonefly was collected from the Touchet River in Washington on August 3rd, 2011 and added to Troutnut.com by Bnewell on August 3rd, 2011.

Discussions of this Adult

Question
10 replies
Posted by Flymonster on Sep 7, 2011
Last reply on Sep 10, 2012 by PaulRoberts
Is this the species known commonly as Short-winged Stonefly?

Dave

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Female Claassenia sabulosa (Golden Stone) Stonefly Adult Pictures

Collection details
Location: Touchet River, Washington
Date: August 3rd, 2011
Added to site: August 3rd, 2011
Author: Bnewell
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