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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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.

Sweltsa (Sallfly) Stonefly Nymph Pictures

This species was fairly abundant in a February sample of the upper Yakima.

Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Ventral view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Ruler view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington The smallest ruler marks are 1 mm.
Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Colors artificially enhanced to show the pattern of setae on the tails.

Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This stonefly was collected from the Yakima River in Washington on February 18th, 2023 and added to Troutnut.com by Troutnut on February 21st, 2023.


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Sweltsa (Sallfly) Stonefly Nymph Pictures

Collection details
Location: Yakima River, Washington
Date: February 18th, 2023
Added to site: February 21st, 2023
Author: Troutnut
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