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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 Baetisca obesa (Armored Mayfly) Mayfly Dun Pictures

This Baetisca obesa dun hatched out in my aquarium from nymphs collected a couple weeks earlier.

Dorsal view of a Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Ventral view of a Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Lateral view of a Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
Ruler view of a Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York The smallest ruler marks are 1 mm.

This mayfly was collected from the Neversink River (aquarium-raised) in New York on May 23rd, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.


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Female Baetisca obesa (Armored Mayfly) Mayfly Dun Pictures

Collection details
Location: Neversink River (aquarium-raised), New York
Date: May 23rd, 2007
Added to site: June 4th, 2007
Author: Troutnut
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