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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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

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Plano, TX

Posts: 1311
Taxon on Oct 6, 2009October 6th, 2009, 7:18 pm EDT
These Predaceous Diving Beetle adults were collected in a kick-net sample from a W. WA foothills river. Although adults, they are barely more than 2mm in length, and have really incredible swimming speed for their size. Although they have been identified to genera as Oreodytes, I am hoping a Dytiscid expert will see this post, and be identify them to species.

Best regards,
Roger Rohrbeck

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