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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 Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae 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.

Underwater photos from the Couderay River

The Couderay River in Wisconsin
The Couderay River in Wisconsin

On-stream insect photos from the Couderay River

This nighttime flash photograph shows a bunch of Ephoron mayflies flying around during the hatch.  So many of them fly around with their dun shucks attached that it seems like they molt from the dun to spinner stage in mid-air.  Actually they molt on streamside vegetation like other mayflies, but they sometimes take off to mate before they're completely finished.

From the Couderay River in Wisconsin

Closeup insects by Troutnut from the Couderay River in Wisconsin

Female Stenacron (Heptageniidae) (Light Cahill) Mayfly Dun from the Couderay River in Wisconsin
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