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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 Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Neoleptophlebia Mayfly Nymph Pictures

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York
Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York
Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York
Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York
Ventral view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York
Ruler view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York The smallest ruler marks are 1 mm.

This mayfly was collected from Mongaup Creek in New York on April 19th, 2006 and added to Troutnut.com by Troutnut on April 21st, 2006.

Discussions of this Nymph

Neoleptophlebia
Posted by Millcreek on Jul 19, 2019
Last reply on Jul 19, 2019 by Millcreek
Should be Neoleptophlebia. Paper is here. http://biosoil.ru/files/00013828.pdf

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Neoleptophlebia Mayfly Nymph Pictures

Collection details
Location: Mongaup Creek, New York
Date: April 19th, 2006
Added to site: April 21st, 2006
Author: Troutnut
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