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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 Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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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Female Hexagenia limbata (Hex) Mayfly Spinner Pictures

Collection details
Location: Gas station in Whitney Point, NY, New York
Date: July 13th, 2005
Added to site: April 14th, 2006
Author: Troutnut
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