Header image
Enter a name
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.

Caudatella edmundsi Mayfly Nymph Pictures

This species was previously know only from the nymph. I reared nymphs and we described the adults and eggs of this interesting species.

This mayfly was collected from the Vermillion River in Montana on July 20th, 2010 and added to Troutnut.com by Bnewell on June 26th, 2011.


Start a Discussion of Nymph

Caudatella edmundsi Mayfly Nymph Pictures

Collection details
Location: Vermillion River, Montana
Date: July 20th, 2010
Added to site: June 26th, 2011
Author: Bnewell
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy