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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington
This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.
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.



Expert wildlife photographers stake out their quarry like a hunter and wait, sometimes for days, for the perfect shot to appear. I am not one of them, but I get lucky sometimes.

Elk moving down the valley
The Firehole River in Wyoming
Bison crossing the Yellowstone River

From the Yellowstone River in Wyoming
Bison crossing the Lamar River in Yellowstone

From the Lamar River in Wyoming
Mooned by a grizzly bear

From Denali National Park in Alaska
Denali National Park in Alaska
Bear with the base of Denali in the background

From Denali National Park in Alaska
Herd in brush near road
Two bull caribou on the fall tundra. Bull caribou from the Nelchina herd in the Clearwater Mountains in Alaska
Cows and calves moving in below me
A musk ox grazing near the Sag River in the coastal plain.

From Dalton Highway in Alaska
Some mergansers stretch and prepare to evacuate their rock as our canoe nears.
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