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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 Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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.

Landscape & scenery photos from the East Fork Big Lost River

The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
This was my first Snake River Fine-Spotted Cutthroat. It's probably a stocker, and no trout are native to this river drainage (which disappeared into aquifers in the desert, even before irrigation took the water), but it's still fun to add another subspecies to my list.

From the East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho
The East Fork Big Lost River in Idaho

Closeup insects by Troutnut from the East Fork Big Lost River in Idaho

References

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