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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.

Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.

Troutnut
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Troutnut on Jul 30, 2019July 30th, 2019, 8:42 am EDT
I ran across [this thread on Roger's site](http://www.flyfishingentomology.com/forum/Replies_Display.php?t=0134) discussing with Kurt the identity of a larva fairly similar to this one. I keyed this one out to Sericostomatidae with the dissecting microscope (although I couldn't really make out the antennae at all), and from there it easily keys to Gumaga. I was uncertain in enough places that I was pleased to get to the end of the key and find cases that perfectly match this specimen.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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