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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.

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Tricorythodes (Trico) Mayfly Nymph Tricorythodes (Trico) Mayfly Nymph

Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph 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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Updates from July 12, 2011

Updates from July 12, 2011

Closeup insects by Bnewell from the Touchet River in Washington

Male Baetis (Blue-Winged Olive) Mayfly Spinner

Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Spinner from the Touchet River in Washington

Probably Baetis tricaudatus.

Collected July 12, 2011 from the Touchet River in Washington

Added by Bnewell on July 13, 2011

Collected July 12, 2011 from the Touchet River in Washington and added by Bnewell on July 13, 2011

Female Baetis (Blue-Winged Olive) Mayfly Spinner

Female Baetis (Baetidae) (Blue-Winged Olive) Mayfly Spinner from the Touchet River in Washington

Collected July 12, 2011 from the Touchet River in Washington

Added by Bnewell on July 13, 2011

Collected July 12, 2011 from the Touchet River in Washington and added by Bnewell on July 13, 2011

Female Baetis (Blue-Winged Olive) Mayfly Dun

Female Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from the Touchet River in Washington

Probably Baetis tricaudatus.

Collected July 12, 2011 from the Touchet River in Washington

Added by Bnewell on July 13, 2011

Collected July 12, 2011 from the Touchet River in Washington and added by Bnewell on July 13, 2011

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