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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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.
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 Rhyacophila bifila (Green Sedges)

Where & when

Time of year : Early to mid-summer

In 23 records from GBIF, adults of this species have mostly been collected during July (43%), August (22%), June (13%), and September (9%).

In 4 records from GBIF, this species has been collected at elevations of 5420, 6398, 7142, and 7480 ft.

Species Range

Hatching behavior

Time of day : Evening

Trout may feed heavily on the emerging pupae.

Larva & pupa biology

Current speed: Fast

Substrate: Boulders

Start a Discussion of Rhyacophila bifila


Caddisfly Species Rhyacophila bifila (Green Sedges)

Species Range
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