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.

Middle Fork Snoqualmie

From the Middle Fork Snoqualmie River in Washington

Stream photos

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Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington

I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.

11 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 Species Limnephilus externus (Summer Flier Sedges)

Where & when

In 101 records from GBIF, adults of this species have mostly been collected during August (30%), September (28%), July (20%), October (13%), and June (8%).

In 70 records from GBIF, this species has been collected at elevations ranging from 3 to 22123 ft, with an average (median) of 1932 ft.

Species Range

source

Map of specific collection sites

Specimens of the Caddisfly Species Limnephilus externus

1 Adult

Limnephilus externus (Summer Flier Sedge) Caddisfly Adult

1 Picture

Limnephilus externus (Limnephilidae) (Summer Flier Sedge) Caddisfly Adult from the Touchet River in Washington

Collected September 14, 2011 from the Touchet River in Washington

Added by Bnewell on September 21, 2011

Collected September 14, 2011 from the Touchet River in Washington and added by Bnewell on September 21, 2011

1 Male Adult

Male Limnephilus externus (Summer Flier Sedge) Caddisfly Adult

5 Pictures

Lateral view of a Male Limnephilus externus (Limnephilidae) (Summer Flier Sedge) Caddisfly Adult from the Henry's Fork of the Snake River in Idaho

Collected August 10, 2018 from the Henry's Fork of the Snake River in Idaho

Added by Troutnut on June 12, 2019

Collected August 10, 2018 from the Henry's Fork of the Snake River in Idaho and added by Troutnut on June 12, 2019

1 Larva

Limnephilus externus (Summer Flier Sedge) Caddisfly Larva

1 Picture

Limnephilus externus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from Temporary ponds- Glacier Nat. Park in Alaska

This caddis is one of the most abundant caddisflies in temporary ponds of Glacier Park. The larvae build a round case of detritus and dead plant material that can get quite large.

Collected June 24, 2008 from Temporary ponds- Glacier Nat. Park in Alaska

Added by Bnewell on June 26, 2011

Collected June 24, 2008 from Temporary ponds- Glacier Nat. Park in Alaska and added by Bnewell on June 26, 2011