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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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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 (Little Maryatt) Mayfly Dun Pictures

Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania
Artistic view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania
Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania
Dorsal view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania
Ventral view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania
Ruler view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania The smallest ruler marks are 1 mm.
Lateral view of a Male Epeorus (Heptageniidae) (Little Maryatt) Mayfly Dun from Mystery Creek #42 in Pennsylvania

This mayfly was collected from Mystery Creek #42 in Pennsylvania on May 28th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Male Epeorus (Little Maryatt) Mayfly Dun Pictures

Collection details
Location: Mystery Creek #42, Pennsylvania
Date: May 28th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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