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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 Doroneuria (Golden Stones)

This less common western genus currently has only two species. Doroneuria theodora & Doroneuria baumanni (mostly coastal)

Calineuria and Doroneuria nymphs both lack anal gills and can be confused, but Doroneuria has a ridge of fine hairs running down the center of its body dorsally and is not as dramatically marked. The adults often have very short wings and also lack the striking head markings of Calineuria. The adult males have large quadrangular hammers that are almost twice as long as wide.
Genus Range


To determine whether a specimen of Perlidae belongs to Doroneuria, use the Key to Genera of Perlidae Nymphs.

Specimens of the Stonefly Genus Doroneuria

1 Male Adult
2 Nymphs

Start a Discussion of Doroneuria

Stonefly Genus Doroneuria (Golden Stones)

Genus Range
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