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 trees were leafing out and the trout were rising on this productive Wisconsin stream

From the Namekagon River in Wisconsin

Stream photos

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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (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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Schroon River Stone Fly

Cstiles has attached this picture to aid in identification. The message is below.

Cstiles
Posts: 2

Cstiles on Jun 13, 2010June 13th, 2010, 1:28 am EDT

I have seen several of these nymphs over the years but Not sure what they are or what the adult looks like. Any help would be appreciated.

Chris

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Jun 13, 2010June 13th, 2010, 4:33 am EDT

Chris,

Your stonefly nymph looks like Paragnetina media. This is one of the most common large perlids in much of the East and Midwest. The adults are dark-winged with yellowish bellies. They look like this: http://bugguide.net/node/view/404851/bgimage

Cstiles
Posts: 2

Cstiles on Jun 13, 2010June 13th, 2010, 8:56 am EDT

Gonzo,
Thanks for the ID. The Schroon is so loaded with different types of stone flies, It's hard to keep track of all of them. The big goldens (Acroneuria carolinensis) are predominate. I estimate that 80% of the trout bug volume is made up of caddis and stones. Mayflies and ants making up the final 20%.
Thanks again,
Chris