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.

Stream photos

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Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva

Lateral view of a Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.

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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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Troutnut.com User Fishhook (Bob)

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Bob

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South Korea

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I am stationed in Seoul, South Korea as Goverment Service civilian supporting our Troops. I love fly fishing and chasing the Manchurian Browns and Cherry trout that inhabit the streams in the Conwando region NE of Seoul.

Rods: Mystic M383-3 and M 593-4 fly rods/ Guideline 3 wt 7'6", Vision 8 wt
Reels: OKuma SLV23, SA, Airrite ARLA II 23, Inovator freestone 567

Hobbies: Fishing, Hunting, Ham radio, riding my 04 Road King, Detailing custome bikes, Computers, Growing orchids.

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Hex MayfliesHexagenia limbata

Troutnut.com User Fishhook (Bob)