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.

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Holocentropus Caddisfly Larva Holocentropus Caddisfly Larva

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington

This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.

11 Recently Added Photos

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.

Male Epeorus pleuralis (Quill Gordon) Mayfly Dun Pictures

Lateral view of a Male Epeorus pleuralis (Heptageniidae) (Quill Gordon) Mayfly Dun from the Beaverkill River in New York

Male Epeorus pleuralis (Heptageniidae) (Quill Gordon) Mayfly Dun from the Beaverkill River in New York

Ventral view of a Male Epeorus pleuralis (Heptageniidae) (Quill Gordon) Mayfly Dun from the Beaverkill River in New York

This mayfly was collected from the Beaverkill River in New York on May 7th, 2005 and added to Troutnut.com by Troutnut on May 16th, 2006.

Discussions of this Dun

Today's Quill Gordon

34 replies

Posted by Beachvid on Feb 5, 2007

Last reply on Mar 27, 2013 by Feathers5

Great pictures of the Quill Gordon. I am aware that color means nothing but these pictures of the body are much more yellow than the normal mahogony body color. I also noted you took them in May and this seems late for them to be around for that area. Are you sure the species is correct?

Start a Discussion of Dun