Header image
Enter a name
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.

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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.

Female Hesperoperla pacifica (Golden Stone) Stonefly Adult Pictures

Lateral view of a Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Artistic view of a Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Ventral view of a Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
The dark, hairless, sclerotized rectangle on the subgenital plate (in focus in this picture) is a key identifying characteristic for Hesperoperla pacifica.

Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Dorsal view of a Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho
Ruler view of a Female Hesperoperla pacifica (Perlidae) (Golden Stone) Stonefly Adult from the Henry's Fork of the Snake River in Idaho The smallest ruler marks are 1 mm.

This stonefly was collected from the Henry's Fork of the Snake River in Idaho on August 1st, 2020 and added to Troutnut.com by Troutnut on August 17th, 2020.


Start a Discussion of Adult

Female Hesperoperla pacifica (Golden Stone) Stonefly Adult Pictures

Collection details
Location: Henry's Fork of the Snake River, Idaho
Date: August 1st, 2020
Added to site: August 17th, 2020
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy