Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Two major forks of this grayling stream come together in this pretty pool.

From the Chena River in Alaska

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.

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.

Biological Name of BWO, Page 2

Feathers5
Posts: 287

Feathers5 on Oct 30, 2013October 30th, 2013, 4:52 am EDT

I promise I'll never ask a another serious question.

Really, Bruce? Never is an awfully long time

Hi
I said that tongue-in-cheek. I always have questions.
Bruce

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Oct 30, 2013October 30th, 2013, 8:34 am EDT

Yes, Bruce, as did I, as did I.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Oldredbarn

Novi, MI

Posts: 2600

Oldredbarn on Oct 30, 2013October 30th, 2013, 2:34 pm EDT

Nice Tony! That's just what the "doctor" ordered, for Brucie! :)

In terms of barbs...did you mean that literally or as a tongue-in-cheek "barb"? :) I have a zillion old hooks and I'm a cheap-o...I still carry an old set of debarbing pliers with me and smash them down on the stream. I forget sometimes that I do occasionally have barbless hooks or that I have already squeesed it down to get a bead head on there. Old habits die hard.

"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood