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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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Female Baetidae (Blue-Winged Olive) Mayfly Dun Pictures

This specimen was collected on the same trip as a similar dun.

Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Lateral view of a Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Dorsal view of a Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Ventral view of a Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin
Female Baetidae (Blue-Winged Olive) Mayfly Dun from the Namekagon River in Wisconsin

This mayfly was collected from the Namekagon River in Wisconsin on May 28th, 2005 and added to Troutnut.com by Troutnut on May 24th, 2006.

Discussions of this Dun

How about a little discussion of this one?
2 replies
Posted by Oldredbarn on Apr 6, 2010
Last reply on Apr 6, 2010 by Martinlf
Jason, Taxon, Gonzo et al...

This one seems to have slipped through the id gauntlet...Does anyone want to hazzard a guess on the species level? BWO is a bit broad...

Spence

Start a Discussion of Dun

Female Baetidae (Blue-Winged Olive) Mayfly Dun Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: May 28th, 2005
Added to site: May 24th, 2006
Author: Troutnut
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