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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 Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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.


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Videos by Troutnut from in

Isonychia nymph swimming around

These nymphs may be the best swimmers of all North American mayflies.

Closeup insects by Troutnut from Miscellaneous Wisconsin and the Namekagon River in Wisconsin

Stenonema luteum (Heptageniidae) Mayfly Nymph from unknown in Wisconsin
Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Nymph from unknown in Wisconsin
Isonychia bicolor (Isonychiidae) (Mahogany Dun) Mayfly Nymph from the Namekagon River in Wisconsin

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