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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.

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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 Matriella

This genus contains a single species of minor importance to western anglers, Matriella teresa. It is the only species recognized in this genus for North America. This dark little mayfly was previously placed in Serratella.

Where & when

In 1 records from GBIF, adults of this genus have been collected during July (100%).

In 1 record from GBIF, this genus has been collected at elevation of 3600 ft.

Genus Range

Start a Discussion of Matriella

Mayfly Genus Matriella

Genus Range
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