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.

Stream photos

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

11 Recently Added Photos

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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Baetis

Male Baetis (Blue-Winged Olive) Mayfly Dun

14 Pictures

This dun molted most of the way into a spinner (though the wings got stuck) the evening after I photographed it, so I took some more photos of the spinner.

I found a female nearby, probably of the same species.

Collected September 18, 2006 from Mystery Creek #43 in New York

Added by Troutnut on October 4, 2006

Collected September 18, 2006 from Mystery Creek #43 in New York and added by Troutnut on October 4, 2006

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Jan 30, 2016January 30th, 2016, 8:27 am EST

So, in about a month olives will be hatching heavily in Central PA. Does anyone have a favorite pattern or secret weapon? Mine is a klinkhamer style emerger tied to match the natural, with a white or orange post for those slate grey days when I can't see anything on the water. If the fish seem picky, I'll go to a dun post, though.

"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 Jan 30, 2016January 30th, 2016, 9:52 am EST

I use a Comparadun and a CDC parachute for the unsophisticated little trout I now fish for, although "sophistication" is often associated with water type. Some flatwater stretches and pools I fish can be challenging.

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Jan 30, 2016January 30th, 2016, 4:51 pm EST

Paul, how do you tie your CDC parachute? Do you use the CDC for hackle, like Shane Stalcup and Ed Engle do? I've tied a few of these, and like the design. I've become a fan of CDC comparaduns of late, having them work very well a time or two.

"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 Jan 31, 2016January 31st, 2016, 4:16 am EST

No, CDC for the post. And regular deer hair Comparaduns. I also fish mergers of rabbit foot hairs (akin to the Usual) and goose "downy barbs" used as a dubbing ball, and an indicator hackled fly too. All are pretty standard designs nowadays.