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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.

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.

Updates from April 23, 2004

Updates from April 23, 2004

Photos by Troutnut

This muskrat swam around me for a while as I fished a caddisfly hatch.

Underwater photos by Troutnut

There's a very well-camouflaged Baetisca laurentina mayfly nymph resting on the twig in the bottom left corner of this picture. Can you spot him?
This is a pretty clear photo of an Epeorus nymph clinging flat against a log. The big mound of debris on the bottom center of the picture, attached to the light rock, is a structure that's been puzzling me. I've found several in one section of the river. It's big, like 2 inches long and maybe 1/2-3/4 inch wide/tall, and hollow, like some sort of coccoon or something. It's clearly a structure built by some sort of little creature, but I'm not sure what.
I'm not quite sure what this is.  It may be an Isonychia nymph hiding under a piece of grass.

Closeup insects by Troutnut from the Namekagon River in Wisconsin

Lateral view of a Male Siphloplecton basale (Metretopodidae) (Pseudo-Gray Drake) Mayfly Dun from the Namekagon River in Wisconsin
This one hatched on the same April Saturday that I saw the first Hendricksons of the season.
The wings aren't really yellowish; that's just the color they take on when they've been injured.

Male Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the Namekagon River in Wisconsin
Female Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the Namekagon River in Wisconsin

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