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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.

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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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Lateral view of a Male Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Oct 28, 2008October 28th, 2008, 8:10 am EDT
This looks like a male vitreus spinner. Although blurry, the terminalia look about right. The dark humeral vein and the little dark marks on the middle rear of segments 3-5 and 7-9 also seem to fit.

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