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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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Stripetails and Yellow Stones

This common name refers to only one genus. Click its scientific name to learn more.

Stonefly Genus Isoperla

These are pretty much always called Stripetails and Yellow Stones.
This is a very common trout stream stonefly genus. It is also huge, with sixty species scattered over the entire continent. Though anglers usually call them Little Yellow Stones or Yellow Sallies, the scientific common name for this genus is Stripetail. The latter is probably better to use as not all of them are necessarily little or yellow.
Isoperla fulva (Perlodidae) (Yellow Sally) Stonefly Adult from the  Touchet River in Washington
Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from unknown in Wisconsin

Stripetails and Yellow Stones

Scientific Name
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