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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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.

7 Recently Added Photos

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.

The Snake River

Landscape & scenery photos from the Snake River

Snake River from the Clark Hill Rest Area on highway 26. Smoke from distant California wildfires was clouding eastern ID / west WY a couple weeks before this year's coast-wide smoke catastrophe.

From the Snake River in Idaho

Closeup insects by Troutnut from the Snake River in Idaho

Male Epeorus albertae (Pink Lady) Mayfly Spinner

12 Pictures

Male Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Spinner from the Snake River in Idaho

This spinner appeared inside our car after a rest stop overlooking the Snake, so that's most likely where it came from. Two different keys place it firmly in Epeorus albertae.

Collected August 22, 2020 from the Snake River in Idaho

Added by Troutnut on September 18, 2020

Collected August 22, 2020 from the Snake River in Idaho and added by Troutnut on September 18, 2020

Hex MayfliesHexagenia limbata

Trout and Salmon Streams › Idaho › The Snake River