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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.
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.

Brachycentrus americanus (American Grannom) Caddisfly Larva Pictures

Both the genus ID (Merritt & Cummins) and species ID (Flint 1984) are pretty confident for this larva, a nice example of a common western caddisfly. It was by far the most abundant insect in my kicknet sample on this trip, and many of the rocks in the fast riffle where I sampled had dozens of these larvae clinging on.

Case view of a Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Ruler view of a Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington The smallest ruler marks are 1 mm.
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Dorsal view of a Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Ventral view of a Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington
Brachycentrus americanus (Brachycentridae) (American Grannom) Caddisfly Larva from the Dosewallips River in Washington

This caddisfly was collected from the Dosewallips River in Washington on July 6th, 2020 and added to Troutnut.com by Troutnut on July 12th, 2020.


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Brachycentrus americanus (American Grannom) Caddisfly Larva Pictures

Collection details
Location: Dosewallips River, Washington
Date: July 6th, 2020
Added to site: July 12th, 2020
Author: Troutnut
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