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.

Stream photos

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Female Skwala (Large Springfly) Stonefly Adult Female 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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Site updates from November 9, 2011

Closeup insects by Entoman from the Fall River in California

Female Anafroptilum album (Tiny Sulphur Dun) Mayfly Dun

3 Pictures

Female Anafroptilum album (Baetidae) (Tiny Sulphur Dun) Mayfly Dun from the Fall River in California

Approx. 5 mm. This is a very significant hatch. It is mostly seen at the height of Summer and I was very surprised to see it emerging this late in the season and in such numbers. When this one is emerging, the fish can become quite selective.

Collected November 8, 2011 from the Fall River in California

Added by Entoman on December 10, 2011

Collected November 8, 2011 from the Fall River in California and added by Entoman on December 10, 2011