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.

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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.

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Not Stenacron, probably Leucrocuta

Male Leucrocuta hebe (Little Yellow Quill) Mayfly Spinner

5 Pictures

Artistic view of a Male Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Spinner from the Teal River in Wisconsin

Collected July 1, 2005 from the Teal River in Wisconsin

Added by Troutnut on April 22, 2006

Collected July 1, 2005 from the Teal River in Wisconsin and added by Troutnut on April 22, 2006

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Oct 19, 2006October 19th, 2006, 11:15 am EDT

Size alone would make Stenacron unlikely, but notice the unmarked legs and that the darkest grouping of crossveins is in-between R1 and SC (Stenacron would have them between R1 and R2). Compare this specimen to the one on the Leucrocuta page--they are probably the same species.

Blue-winged OlivesBaetis

Troutnut Forum › Specimen Discussion › Not Stenacron, probably Leucrocuta