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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 East Fork Big Lost River in Idaho

Stream photos

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Limnephilus (Summer Flier Sedge) Caddisfly LarvaLimnephilus (Summer Flier Sedge) Caddisfly Larva
Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington
This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.
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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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  3. Found in Colorado

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  3. Found in Colorado

Pdcox has attached these 2 pictures to aid in identification. The message is below.
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Pdcox
Kansas city

Posts: 12
Pdcox on Jul 23, 2020July 23rd, 2020, 9:17 am EDT
Underside and topside of a nymph found at 8200' elevation, middle Colorado, small rolling creek. Note the red underbelly
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Jul 23, 2020July 23rd, 2020, 12:18 pm EDT
Hi Paul-

I believe this mayfly nymph to be of genus Rhithrogena.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

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