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.

We were lucky to be able to fish through this storm as it skirted around us to the north, giving us just enough clouds to prompt a BWO hatch but keeping the lighting at a safe distance.

From Slough Creek in Wyoming

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.

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Al514 has attached this picture to aid in identification. The message is below.

Oldredbarn

Novi, MI

Posts: 2600

Oldredbarn on Nov 30, 2010November 30th, 2010, 4:23 am EST

spence - good thing you were upstream of the bladder emptying, stream warming, water raising, drunken fishermen.

Tony,

For arguments sake, lets just call the aforementioned bridge "Wakeley Bridge". This is the terminal end, on the Mainstream Au Sable, of the no-kill section known to anglers there as the "Holy Water"...It is considered "bad-form" to piss in the "Holy Water"...It don't even sound right...Right? So if he was on the opposite side of the bridge, the downstream side, I guess he was ok. :)

I want to know what everyone's ideas are on actually imitating the near clear sections of the abdomen on the critter at the start of this post...How do you plan on making the hook shank disappear??? I can see a couple strands/wrapped like a rope of dark peacock with a traditional wrapped & figure-eighted rooster hackle spinner wing for the thorax, but what to do about that abdomen?

Spence

"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

Gutcutter

Pennsylvania

Posts: 470

Gutcutter on Nov 30, 2010November 30th, 2010, 4:36 am EST

i would say, leave that realistic stuff to fred, but i'm gonna try anyways:
#24 tmc 2488 hook
extended abdomen (just a length of monofilament) with microfibettes secured (w 14/0 tan thread) and then segmented with the thread.
hiviz or cdc wing clump and
chocolate dubbed thorax and if i'm really in the mood, red thread for the head to match the eyes.
but hell, with such a small fly, why not just a small mayfly pattern tied with a mono abdomen... gonzo's chapter on large fly imitations vs. small fly imitations leads me to believe that it really shouldn't matter...

All men who fish may in turn be divided into two parts: those who fish for trout and those who don't. Trout fishermen are a race apart: they are a dedicated crew- indolent, improvident, and quietly mad.

-Robert Traver, Trout Madness

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Nov 30, 2010November 30th, 2010, 4:57 am EST

Mono extended abdomen--I like it! A Varivas ultra midge hook would work here too. But I'm not convinced that we'll find a fishable hatch of those bugs. If you were fishing with Shawn, you were on the stream where I waited and waited, years ago (see the early posts above), for those "Tricos" that weren't Tricos to fall. I now know better. But I'm always game for an experiment, and am sure we'll have to give it a go. Just as long as there aren't any hot fences anywhere nearby.

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Nov 30, 2010November 30th, 2010, 12:51 pm EST

Probably it wouldn't matter much, as others said. But I'd sure like to add that feature if I were fishing such a fall. Contrast may be the important thing there, rather than exactness. Mebbe pearl crystal flash or other such frosted pearly plastic ribbing for the clear section?

Orvis offered a hollow mono butt material a few years ago that might be just the thing. It seems to have disappeared from the shelves though.

Konchu

Site Editor
Indiana

Posts: 498

Konchu on Dec 1, 2010December 1st, 2010, 1:01 pm EST

This is very non-traditional, but I wonder if something like glad press'n'seal could be used to create the translucent part? those with lab access could try parafilm. both would be hard to work with, but might produce interesting results, especially if some color could be wrapped in wide swaths to imitate the joinings on the abdomen. the monofilament idea is hard to beat, though.

well, i'd better go. mythbusters is testing insect myths...