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 Rhithrogena virilis Mayfly Dun Pictures

I'm guessing this one is Rhithrogena virilis based on collection of a male spinner of similar size and body configuration during the same trip.

Lateral view of a Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington
Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington
Dorsal view of a Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington
Ventral view of a Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington
Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington
Ruler view of a Female Rhithrogena virilis (Heptageniidae) Mayfly Dun from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1/16".

This mayfly was collected from the South Fork Snoqualmie River in Washington on June 16th, 2018 and added to Troutnut.com by Troutnut on June 23rd, 2018.


Start a Discussion of Dun

Female Rhithrogena virilis Mayfly Dun Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: June 16th, 2018
Added to site: June 23rd, 2018
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy