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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

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 Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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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Partsman's profile picture
bancroft michigan

Posts: 321
Partsman on Nov 20, 2019November 20th, 2019, 11:38 am EST
I have been fishing through the fall, and have seen many bwo hatches, while I have not got my hands on one, I have noticed there colors. Maybe its my old eyes, but most appear to me to be a light dun color, almost translucent. I have some superfine blue dun dubbing which is a light colored dun. Anyone have some suggestions on any other dubbing which may work to get that lighter dun color?
Thanks, Mike.
Martinlf's profile picture
Palmyra PA

Posts: 3047
Martinlf on Nov 20, 2019November 20th, 2019, 4:30 pm EST
Muskrat belly underfur?
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Posts: 29
BoulderWork on Nov 21, 2019November 21st, 2019, 12:48 am EST
Might want to also consider Beaver fur dubbing. Waterproof, fine fibers that can allow a tight fur dub for abdomen.
Partsman's profile picture
bancroft michigan

Posts: 321
Partsman on Nov 21, 2019November 21st, 2019, 10:18 am EST
Thanks guys, I have some muskrat, all the beaver I have is dyed, but im going down to my local fly shop tomorrow so will look for some beaver!
Wiflyfisher's profile picture

Posts: 622
Wiflyfisher on Nov 30, 2019November 30th, 2019, 5:45 am EST
I don't know if this will help you or not, this is a photo I took from across the pond of a BWO dun on the last day of our inland trout fishing season this past October.

Partsman's profile picture
bancroft michigan

Posts: 321
Partsman on Nov 30, 2019November 30th, 2019, 12:22 pm EST
Yes! Thank you Wiflyfisher, more translucent dun colored than green. Im working on some sort of dubbing. But you hit the nail on the head.
Thanks, Mike.

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