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.

Inlet of Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Clostoeca disjuncta (Northern Caddisfly) Caddisfly Larva Clostoeca disjuncta (Northern Caddisfly) Caddisfly Larva

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington

This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.

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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 Neophylax concinnus (Autumn Mottled Sedges)

Where & when

Time of year : Fall

This is a widespread species.

In 34 records from GBIF, adults of this species have mostly been collected during September (35%), October (35%), August (15%), May (6%), and November (6%).

In 34 records from GBIF, this species has been collected at elevations ranging from 30 to 2260 ft, with an average (median) of 620 ft.

Species Range

source

Map of specific collection sites

Egg-Laying behavior

The known ovipositing behavior of this species does not create any opportunities for the trout. They either lay eggs on overhanging vegetation and wait for rain to wash them into the water, or land on this vegetation and drop them into the water.

Start a Discussion of Neophylax concinnus

References

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.