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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

Stream photos

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

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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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Female Cinygmula (Dark Red Quill) Mayfly Dun Pictures

I'm calling this one Cinygmula just based on the general look and the fact that the genus is very common in this river. Official keys can't rule out other Heptageniidae, though.

Lateral view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

Ruler view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1/16".

Ventral view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

This mayfly was collected from the South Fork Snoqualmie River in Washington on June 16th, 2018 and added to Troutnut.com by Troutnut on July 3rd, 2018.

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