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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.

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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Paraleptophlebia bicornuta (Mahogany Dun) Mayfly Nymph Pictures

This species is interesting because it is common in lakes as well as streams. It is one of the last species of the year to emerge in western Montana. Adults have been collected as late as October 15 weather permitting.

This mayfly was collected from Flathead Lake in Montana on July 31st, 2007 and added to Troutnut.com by Bnewell on June 26th, 2011.


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Paraleptophlebia bicornuta (Mahogany Dun) Mayfly Nymph Pictures

Collection details
Location: Flathead Lake, Montana
Date: July 31st, 2007
Added to site: June 26th, 2011
Author: Bnewell
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