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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 Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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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Eurylophella (Chocolate Dun) Mayfly Nymph Pictures

Ruler view of a Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Namekagon River in Wisconsin The smallest ruler marks are 1 mm.
Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Namekagon River in Wisconsin
Dorsal view of a Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Namekagon River in Wisconsin
Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Namekagon River in Wisconsin
Ventral view of a Eurylophella (Ephemerellidae) (Chocolate Dun) Mayfly Nymph from the Namekagon River in Wisconsin

This mayfly was collected from the Namekagon River in Wisconsin on June 8th, 2021 and added to Troutnut.com by Troutnut on June 9th, 2021.


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Eurylophella (Chocolate Dun) Mayfly Nymph Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: June 8th, 2021
Added to site: June 9th, 2021
Author: Troutnut
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