Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

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Psychodidae True Fly Larva Psychodidae True Fly Larva

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.

8 Recently Added Photos

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

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

Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from Mongaup Creek in New York

This mayfly was collected from Mongaup Creek in New York on May 6th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.

Discussions of this Nymph

Neoleptoptphlebia

Posted by Millcreek on Jul 19, 2019

Last reply on Jul 19, 2019 by Millcreek

Should be Neoleoptophlebia. Paper is here. http://biosoil.ru/files/00013828.pdf

BQ Nymph

Posted by Martinlf on Apr 4, 2009

Last reply on Apr 4, 2009 by Martinlf

Jason, thanks. I did look on the site, but somehow overlooked these photos. This is helpful. I also did a general Google image search and got all sorts of colors, but most of the lighter BQ nymphs looked immature, with light wing pads. You and others responding are getting me closer to an answer about my emerger question.

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