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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.

Lone tree on a rock in the middle of Big Lake. Fittingly, Big Lake is the largest of several short wide spots in the upper Brule River. From the Bois Brule River in Wisconsin

Stream photos

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Female Skwala (Large Springfly) Stonefly AdultFemale Skwala (Large Springfly) Stonefly Adult
Lateral view of a Female Skwala (Perlodidae) (Large Springfly) Stonefly Adult from Mystery Creek #308 in Washington
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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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  3. Another vitreus

  1. Troutnut Forum
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  2. Specimen Discussion
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  3. Another vitreus

Female Epeorus vitreus (Sulphur) Mayfly Spinner
8 Pictures
Artistic view of a Female Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from the Namekagon River in Wisconsin
Collected June 1, 2005 from the Namekagon River in Wisconsin
Added by Troutnut on May 24, 2006
Collected June 1, 2005 from the Namekagon River in Wisconsin and added by Troutnut on May 24, 2006
Reply
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Oct 28, 2008October 28th, 2008, 12:52 pm EDT
A dark female. The only dark (or clouded) cross vein is the humeral vein near the base of the wing.

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