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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.

The Yakima River in Washington

Stream photos

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Sweltsa (Sallfly) Stonefly NymphSweltsa (Sallfly) Stonefly Nymph
Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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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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Closeup insects by Bnewell from Fern Creek in Montana

Female Drunella spinifera (Western Slate Olive Dun) Mayfly Dun
2 Pictures
Female Drunella spinifera (Ephemerellidae) (Western Slate Olive Dun) Mayfly Dun from Fern Creek in Montana
Collected July 8, 2007 from Fern Creek in Montana
Added by Bnewell on June 29, 2011
Collected July 8, 2007 from Fern Creek in Montana and added by Bnewell on June 29, 2011
Male Drunella spinifera (Western Slate Olive Dun) Mayfly Spinner
2 Pictures
Male Drunella spinifera (Ephemerellidae) (Western Slate Olive Dun) Mayfly Spinner from Fern Creek in Montana
Collected July 8, 2007 from Fern Creek in Montana
Added by Bnewell on June 29, 2011
Collected July 8, 2007 from Fern Creek in Montana and added by Bnewell on June 29, 2011

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