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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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Male Ephemera simulans (Ephemeridae) (Brown Drake) Mayfly Dun from Flathead Lake in Montana
Taxon
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Site Editor
Plano, TX

Posts: 1311
Taxon on Jun 24, 2019June 24th, 2019, 5:26 pm EDT
Hi Bob-

I believe this mayfly to be a female dun (subimago) rather than a spinner (imago) as it was labeled. Do you have a reason to believe I am mistaken?
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Jul 2, 2019July 2nd, 2019, 7:50 pm EDT
Good catch Roger.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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