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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.

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.
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Male Ephemerella excrucians (Pale Morning Dun) Mayfly Dun Pictures

This mayfly was collected from unknown in Wisconsin on May 22nd, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Dun

Dark Sulphur
10 replies
Posted by Martinlf on Aug 17, 2007
Last reply on May 24, 2009 by Wiflyfisher
Would some of the entomologists on the site comment on the color of this sulphur dun? I was scanning through the images, planning on doing some dyeing, and this one caught my attention as it is so much darker than others.

Start a Discussion of Dun

Male Ephemerella excrucians (Pale Morning Dun) Mayfly Dun Pictures

Collection details
Location: unknown, Wisconsin
Date: May 22nd, 2004
Added to site: January 25th, 2006
Author: Troutnut
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