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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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Lateral view of a Female Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Dun from the Henry's Fork of the Snake River in Idaho
I can't be certain of the ID of this female dun, but I'm calling it Drunella flavilinea for three reasons: 1) the known abundance of "flavs" on the Henry's Fork, 2) clear differences in coloration from my confirmed specimens of Drunella coloradensis, which is the main lookalike, and 3) the habitat (a sizable river in a wide mountain valley, rather than a small, high-altitude stream) suggests it's not coloradensis.
Roguerat
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Posts: 456
Roguerat on Mar 11, 2021March 11th, 2021, 7:51 am EST
Lowell,

Welcome to a great forum, and I pm'd you on some Flav resources. Not a familiar fly (local to MI, anyway) so far as I know...

Roguerat

'Less is more...'

Ludwig Mies Vande Rohe

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