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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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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.

Updates from June 11, 2007

Updates from June 11, 2007

Closeup insects by Bnewell from the Flathead River and Rock Creek in Montana

Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Flathead River-lower in Montana
This genus can get incredibly abundant especially below dams.This specimen shows the two sclerotized bars needed to identify it to genus. These usually curl up like this one when preserved.
Ephemerella (Ephemerellidae) (Hendricksons, Sulphurs, PMDs) Mayfly Nymph from Rock Creek in Montana
Ephemerella is a very common genus of mayfly in Montana but nymphs are difficult to identify to species.

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