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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.

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.
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Gray-Winged Blue Duns

This common name refers to only one species. Click its scientific name to learn more.

Mayfly Species Caenis amica

These are very rarely called Gray-Winged Blue Duns.
This is the most common Caenis species in our trout streams. It is often found in angling books under a former name, Caenis simulans. Trout occasionally feed on it selectively.

Gray-Winged Blue Duns

Scientific Name
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