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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

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.

Pteronarcys californica (Giant Salmonfly) Stonefly Nymph Pictures

Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Lateral view of a Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Dorsal view of a Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Ventral view of a Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana
Ruler view of a Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Nymph from the Gallatin River in Montana The smallest ruler marks are 1 mm.

This stonefly was collected from the Gallatin River in Montana on July 2nd, 2019 and added to Troutnut.com by Troutnut on July 18th, 2019.


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Pteronarcys californica (Giant Salmonfly) Stonefly Nymph Pictures

Collection details
Location: Gallatin River, Montana
Date: July 2nd, 2019
Added to site: July 18th, 2019
Author: Troutnut
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