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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.

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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Female Ephemerella invaria (Sulphur) Mayfly Dun Pictures

Lateral view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania
Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania
Dorsal view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania
Ventral view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania
Ruler view of a Female Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania The smallest ruler marks are 1 mm.

This mayfly was collected from the Little Juniata River in Pennsylvania on May 25th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Female Ephemerella invaria (Sulphur) Mayfly Dun Pictures

Collection details
Location: Little Juniata River, Pennsylvania
Date: May 25th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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