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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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.
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Isoperla fusca (Yellow Sally) Stonefly Nymph Pictures

This specimen keys to Isoperla fusca using the key in Szczytko & Stewart 1979, but some species of Isoperla weren't represented there. It's probably the same species as this one collected a year later. Despite taking many good pictures of both, I'm not sure of the species ID.

Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Dorsal view of a Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Ruler view of a Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington The smallest ruler marks are 1 mm.
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
The row of stout setae along the back of the head (anterior of the occiput) on this specimen was relevant to the species ID.

Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington
Isoperla fusca (Perlodidae) (Yellow Sally) Stonefly Nymph from the Yakima River in Washington

This stonefly was collected from the Yakima River in Washington on April 9th, 2021 and added to Troutnut.com by Troutnut on April 12th, 2021.


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Isoperla fusca (Yellow Sally) Stonefly Nymph Pictures

Collection details
Location: Yakima River, Washington
Date: April 9th, 2021
Added to site: April 12th, 2021
Author: Troutnut
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