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.

Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Female Skwala (Large Springfly) Stonefly Adult Female Skwala (Large Springfly) Stonefly Adult

Lateral view of a Female Skwala (Perlodidae) (Large Springfly) Stonefly Adult from Mystery Creek #308 in Washington

9 Recently Added Photos

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 Family Psychomyiidae

Two species of this small family may be very abundant and important to the angler, Psychomyia flavida and Lype diversa.

Where & when

In 254 records from GBIF, adults of this family have mostly been collected during June (28%), July (22%), May (19%), and August (14%).

In 154 records from GBIF, this family has been collected at elevations ranging from 20 to 8924 ft, with an average (median) of 2342 ft.

Family Range

source

Map of specific collection sites

Hatching behavior

The pupae emerge by swimming to the surface.

Egg-Laying behavior

Females dive to the bottom of the river to lay their eggs.

Larva & pupa biology

Diet: Algae, leaves, animal matter

Shelter type: Silk tube attached to underwater surfaces and covered with various types of stream debris

Start a Discussion of Psychomyiidae

References

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