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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.

Dorsal view of a Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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.

Oldredbarn
Oldredbarn's profile picture
Novi, MI

Posts: 2600
Oldredbarn on Mar 5, 2013March 5th, 2013, 11:13 am EST
I just received a catalog from Dillon Montana...Al Troth passed away last August 3rd...The creator of the Elk Hair Caddis, probably rivalling the Adams for world wide fame and his "western" version of the PT Nymph...

The EHC was one of the first flies I ever tied...When I headed west in 95 to fish my boxes were filled with them.

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
Crepuscular
Crepuscular's profile picture
Boiling Springs, PA

Posts: 920
Crepuscular on Mar 5, 2013March 5th, 2013, 12:57 pm EST
Yeah I saw that last fall. I just threw some away that had to be at least 20 years old.
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Mar 6, 2013March 6th, 2013, 10:05 am EST
RIP, Al Troth. The Elkhair Caddis is one of my all-time best flies, not just for trout either. Down in San Marcos, TX the big colorful redbreast sunnies would suck them in just like brookies or browns do. What a wonderful pattern, so easy to tie and make endless variants of.

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Sayfu
Posts: 560
Sayfu on Mar 8, 2013March 8th, 2013, 6:02 am EST

Love the Elkhair Caddis, BUT..the only feature of Al's pattern that I couldn't accept was the long hackle that extended well below the gape of the hook. Somebody very knowledgeable regarding Al, and his Elkhair Caddis told me why it was favorable to do so, and I forgot why.

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