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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.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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 Eurylophella (Chocolate Dun) Mayfly Dun Pictures

Ventral view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the Teal River in Wisconsin
Dorsal view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the Teal River in Wisconsin
Lateral view of a Male Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Dun from the Teal River in Wisconsin

This mayfly was collected from the Teal River in Wisconsin on June 4th, 2005 and added to Troutnut.com by Troutnut on May 24th, 2006.


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Male Eurylophella (Chocolate Dun) Mayfly Dun Pictures

Collection details
Location: Teal River, Wisconsin
Date: June 4th, 2005
Added to site: May 24th, 2006
Author: Troutnut
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