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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

Stream photos

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Female Hydropsyche (Spotted Sedge) Caddisfly Adult Female Hydropsyche (Spotted Sedge) Caddisfly Adult

Lateral view of a Female Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Adult from the Columbia River in Washington

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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.

Caddisfly Species Potamyia flava (Yellow Sedges)

Where & when

Preferred waters: Large rivers

Swisher and Richards report in Selective Trout that this species is important in the Midwest and the South.

In 141 records from GBIF, adults of this species have mostly been collected during June (22%), August (20%), July (18%), September (16%), May (15%), and October (6%).

In 71 records from GBIF, this species has been collected at elevations ranging from 180 to 5955 ft, with an average (median) of 3100 ft.