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.

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.
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.

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner Pictures

I only caught a couple of these, and they were both females, so I'm not sure I'll be able to identify it any further.

Lateral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Dorsal view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Ventral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
Ruler view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from Devil's Creek in Wisconsin on June 14th, 2021 and added to Troutnut.com by Troutnut on June 21st, 2021.


Start a Discussion of Spinner

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner Pictures

Collection details
Location: Devil's Creek, Wisconsin
Date: June 14th, 2021
Added to site: June 21st, 2021
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy