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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.

Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner Pictures

Ruler view of a Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana The smallest ruler marks are 1 mm.
Lateral view of a Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana
Dorsal view of a Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana
Ventral view of a Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner from Mystery Creek #237 in Montana

This mayfly was collected from Mystery Creek #237 in Montana on August 1st, 2020 and added to Troutnut.com by Troutnut on August 18th, 2020.


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Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner Pictures

Collection details
Location: Mystery Creek #237, Montana
Date: August 1st, 2020
Added to site: August 18th, 2020
Author: Troutnut
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