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.

Stream photos

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Male Baetidae (Blue-Winged Olive) Mayfly Dun Male Baetidae (Blue-Winged Olive) Mayfly Dun

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.

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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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Female Hexagenia limbata (Hex) Mayfly Spinner Pictures

I found this Hexagenia limbata spinner on a gas station in upstate New York, not a region known for heavy hatches of this species.

Ruler view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Spinner from Gas station in Whitney Point, NY in New York The smallest ruler marks are 1 mm.

Ventral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Spinner from Gas station in Whitney Point, NY in New York

This mayfly was collected from Gas station in Whitney Point, NY in New York on July 13th, 2005 and added to Troutnut.com by Troutnut on April 14th, 2006.

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