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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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Mayfly Genus Macdunnoa

Where & when

In 4 records from GBIF, adults of this genus have been collected during July (50%), May (25%), and June (25%).

In 1 record from GBIF, this genus has been collected at elevation of 4948 ft.

Genus Range

Start a Discussion of Macdunnoa

Mayfly Genus Macdunnoa

Taxonomy
Species in Macdunnoa
Macdunnoa persimplex
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Species in Macdunnoa: Macdunnoa persimplex
2 species (Macdunnoa brunnea and Macdunnoa nipawinia) aren't included.
Genus Range
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