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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

Stream photos

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Coleoptera (Beetle) Insect Larva Coleoptera (Beetle) Insect Larva

Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek in Washington

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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.

Moved to Acroneuria lycorias

Acroneuria lycorias (Golden Stone) Stonefly Nymph

3 Pictures

Dorsal view of a Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Nymph from the Namekagon River in Wisconsin

Collected January 12, 2004 from the Namekagon River in Wisconsin

Added by Troutnut on January 25, 2006

Collected January 12, 2004 from the Namekagon River in Wisconsin and added by Troutnut on January 25, 2006

Entoman

Northern CA & ID

Posts: 2604

Entoman on Apr 8, 2013April 8th, 2013, 2:42 pm EDT

Here's a good example of an Acroneurinae species other than A. abnormis that can have a dark body. The presence of anal gills and a thick occiptal bar impinged by a black spot in the middle point to lycorias. The picture is dark and the angle gives the head the flat based triangle look of the Perlinae, but if you enlarge the photo and look closely, the pale occipital bar at the back of the head is located where the ridge should be, precluding that subfamily.

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman