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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 Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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 Ephemerella invaria (Sulphur) Mayfly Spinner Pictures

Lateral view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania
Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania
Dorsal view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania
Ventral view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania
Ruler view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania The smallest ruler marks are 1 mm.

This mayfly was collected from Penn's Creek in Pennsylvania on May 26th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Female Ephemerella invaria (Sulphur) Mayfly Spinner Pictures

Collection details
Location: Penn's Creek, Pennsylvania
Date: May 26th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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