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.

I spent more than an hour casting to several rising trout in this pool and caught only two. Its clear water and tricky currents harbor dozens of free-rising, usually very hard-to-catch fish.

From Enfield Creek in New York

Stream photos

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.

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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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Acroneuria abnormis (Golden Stone) Stonefly Nymph Pictures

Ruler view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania The smallest ruler marks are 1 mm.

Ventral view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

Dorsal view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

Lateral view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

Perlid stonefly nymph. A stonefly nymph crawls along the river rocks

Artistic view of a Acroneuria abnormis (Perlidae) (Golden Stone) Stonefly Nymph from Paradise Creek in Pennsylvania

This stonefly was collected from Paradise Creek in Pennsylvania on May 29th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

Discussions of this Nymph

Hate to do this again....

5 replies

Posted by PeterO on Jun 6, 2007

Last reply on Oct 1, 2010 by GONZO

Jason-

This is actually a specimen of Acroneuria abnormis. Paragnetina species have a complete set of spinules/setae on the occiput, which this guy is lacking. On a semi-related subject, could you forward me the collection data for the Arcynopteryx paralella you got from the Catskills? Thanks a bunch.

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