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.

Stream photos

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Psychodidae True Fly Larva Psychodidae True Fly Larva

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington

This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.

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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 Glossosoma intermedium (Saddle-case Makers)

Where & when

Time of year : March through August

Preferred waters: Streams and spring ponds

This species is spread out across the continent, but most abundant in the Midwest.

In 86 records from GBIF, adults of this species have mostly been collected during June (30%), July (28%), April (12%), May (8%), March (7%), and August (6%).

In 50 records from GBIF, this species has been collected at elevations ranging from 7 to 6322 ft, with an average (median) of 266 ft.

Species Range

source

Map of specific collection sites

Start a Discussion of Glossosoma intermedium

References

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.