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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.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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.

Male Stenonema modestum (Cream Cahill) Mayfly Spinner Pictures

Lateral view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Lateral view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Ruler view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin The smallest ruler marks are 1 mm.
Ventral view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Artistic view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Artistic view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
Artistic view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin

This mayfly was collected from the Teal River in Wisconsin on June 7th, 2021 and added to Troutnut.com by Troutnut on June 8th, 2021.


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Male Stenonema modestum (Cream Cahill) Mayfly Spinner Pictures

Collection details
Location: Teal River, Wisconsin
Date: June 7th, 2021
Added to site: June 8th, 2021
Author: Troutnut
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