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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 capitata (Golden Stone) Stonefly Nymph Pictures

Dorsal view of a Agnetina capitata (Perlidae) (Golden Stone) Stonefly Nymph from Salmon Creek in New York
Ventral view of a Agnetina capitata (Perlidae) (Golden Stone) Stonefly Nymph from Salmon Creek in New York
Agnetina capitata (Perlidae) (Golden Stone) Stonefly Nymph from Salmon Creek in New York
Agnetina capitata (Perlidae) (Golden Stone) Stonefly Nymph from Salmon Creek in New York
Agnetina capitata (Perlidae) (Golden Stone) Stonefly Nymph from Salmon Creek in New York

This stonefly was collected from Salmon Creek in New York on March 29th, 2006 and added to Troutnut.com by Troutnut on April 7th, 2006.

Discussions of this Nymph

Probably Agnetina capitata
5 replies
Posted by GONZO on Oct 4, 2006
Last reply on Mar 23, 2011 by Jmd123
The row of spinules across the back of the head in combination with the presence of anal gills indicates that Agnetina is the likely genus; and the dorsal pattern appears to be classic capitata.

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Agnetina capitata (Golden Stone) Stonefly Nymph Pictures

Collection details
Location: Salmon Creek, New York
Date: March 29th, 2006
Added to site: April 7th, 2006
Author: Troutnut
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