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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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 Ephemerella aurivillii Mayfly Dun Pictures

This female was collected in proximity to a male that looks like the same species.

Lateral view of a Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana
Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana
Dorsal view of a Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana
Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana
Ruler view of a Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana The smallest ruler marks are 1 mm.
Ventral view of a Female Ephemerella aurivillii (Ephemerellidae) Mayfly Dun from the Madison River in Montana

This mayfly was collected from the Madison River in Montana on July 1st, 2019 and added to Troutnut.com by Troutnut on July 18th, 2019.


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Female Ephemerella aurivillii Mayfly Dun Pictures

Collection details
Location: Madison River, Montana
Date: July 1st, 2019
Added to site: July 18th, 2019
Author: Troutnut
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