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.

Outlet stream of Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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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.

Baetis (Blue-Winged Olive) Mayfly Nymph Pictures

Ruler view of a Baetis (Baetidae) (Blue-Winged Olive) Mayfly Nymph from Mystery Creek #62 in New York The smallest ruler marks are 1 mm.

Baetis (Baetidae) (Blue-Winged Olive) Mayfly Nymph from Mystery Creek #62 in New York

Dorsal view of a Baetis (Baetidae) (Blue-Winged Olive) Mayfly Nymph from Mystery Creek #62 in New York

Lateral view of a Baetis (Baetidae) (Blue-Winged Olive) Mayfly Nymph from Mystery Creek #62 in New York

This mayfly was collected from Mystery Creek #62 in New York on April 1st, 2007 and added to Troutnut.com by Troutnut on April 3rd, 2007.

Discussions of this Nymph

Diphetor

5 replies

Posted by Earlfishman on Apr 11, 2007

Last reply on Apr 13, 2007 by Troutnut

Jason,

I really enjoy your site, you've got some great photos and some really good info. I just wanted to let you know that this mayfly looks like it might actually be a Baetis sp., not a Diphetor hageni. Diphetor's antenna would be much closer together at the base and there would definitely be no gill on ab seg. 1. I can't give you a sure ID without photos of the front of the head and the mouth parts.

Keep up the good work.

Earl

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