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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.

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.

Female Eurylophella temporalis (Chocolate Dun) Mayfly Spinner Pictures

This female spinner molted from a dun I photographed a few days earlier, as did a male of the same species that I captured with it.

Lateral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the West Fork of the Chippewa River in Wisconsin
Dorsal view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the West Fork of the Chippewa River in Wisconsin
Ventral view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the West Fork of the Chippewa River in Wisconsin
Ruler view of a Female Eurylophella temporalis (Ephemerellidae) (Chocolate Dun) Mayfly Spinner from the West Fork of the Chippewa River in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from the West Fork of the Chippewa River in Wisconsin on June 21st, 2021 and added to Troutnut.com by Troutnut on June 24th, 2021.


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Female Eurylophella temporalis (Chocolate Dun) Mayfly Spinner Pictures

Collection details
Location: West Fork of the Chippewa River, Wisconsin
Date: June 21st, 2021
Added to site: June 24th, 2021
Author: Troutnut
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