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.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture.

From the Susitna River in Alaska

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

6 Recently Added Photos

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 Eurylophella temporalis (Chocolate Dun) Mayfly Dun Pictures

I found this specimen along with a male on the surface in the shallows of a long flat in a warm-water smallmouth bass stream, during the middle of the afternoon. This same individual is listed as a separate specimen after molting into a spinner.

Lateral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin

Artistic view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin

Dorsal view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin

Ventral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin

Ruler view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the West Fork of the Chippewa River in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from the West Fork of the Chippewa River in Wisconsin on June 21st, 2021 and added to Troutnut.com by Troutnut on June 24th, 2021.

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