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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

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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Stonefly Genus Diura

Where & when

In 30 records from GBIF, adults of this genus have mostly been collected during June (53%), July (23%), May (13%), and August (7%).

In 444 records from GBIF, this genus has been collected at elevations ranging from -164 to 4921 ft, with an average (median) of 1332 ft.

Genus Range

Start a Discussion of Diura

Stonefly Genus Diura

Genus Range
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