Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin

Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Stream photos

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Limnephilidae (Giant Sedges) Caddisfly Larva Limnephilidae (Giant Sedges) Caddisfly Larva

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington

This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.

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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.

A quick fishing detour from a work trip

By Troutnut on May 28th, 2020

I spent most of the month of May in Alaska, and most of that sitting in an AirBnB in North Pole abiding by the required 2-week indoor quarantine for travelers from out-of-state due to Covid-19. After the quarantine came a frantic sequence of fieldwork to train the technician we hired to complete our second summer of data collection on a study of food resources for juvenile Chinook Salmon in the Chena River. However, our weather-dependent sampling schedule allowed for a break from May 29th-31st, and I drove south to chase rainbow trout.