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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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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Cambaridae Crayfish Adult Pictures

This crayfish was collected from unknown in Wisconsin on January 31st, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Adult

size
Posted by Flytyer0423 on Apr 6, 2010
Last reply on May 6, 2010 by Dryfly
what size hook should i use for imitating these. size 10 streamer?
Family
Posted by DMM on Nov 29, 2006
Last reply on Nov 29, 2006 by DMM
Definitely Cambaridae, most likely Orconectes--the first pleopod is needed for positive ID

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Cambaridae Crayfish Adult Pictures

Collection details
Location: unknown, Wisconsin
Date: January 31st, 2004
Added to site: January 25th, 2006
Author: Troutnut
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