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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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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Mystacides

Mystacides sepulchralis (Black Dancer) Caddisfly Adult

4 Pictures

Lateral view of a Mystacides sepulchralis (Leptoceridae) (Black Dancer) Caddisfly Adult from the Neversink River in New York

Collected September 4, 2006 from the Neversink River in New York

Added by Troutnut on October 3, 2006

Collected September 4, 2006 from the Neversink River in New York and added by Troutnut on October 3, 2006

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Aug 23, 2010August 23rd, 2010, 4:33 am EDT

Wow, I don't remember them being so small! I believe I tied mine on a #18. They have long wings and look bigger on the wing I believe. On E Branch Owego they were in fishable numbers.

Blue-winged OlivesBaetis

Troutnut Forum › Specimen Discussion › Mystacides