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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.

The Firehole River in Wyoming

Stream photos

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Skwala (Large Springfly) Stonefly NymphSkwala (Large Springfly) Stonefly Nymph
Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington
This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
6 Recently Added Photos
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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Photos by Troutnut

This large, cold trout stream runs through a vast swamp. The weeds grow in deep silt that harbors a dense population of Hexagenia limbata mayflies.
A merganser too young to fly scurries ahead of the canoe.
The Long Lake Branch of the White runs slow and deep through the vast Bibon Swamp after emerging from a hilly upland forest.

Closeup insects by Troutnut from the White River and the Long Lake Branch of the White River in Wisconsin

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Female Hexagenia limbata (Hex) Mayfly Dun
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin
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Female Hexagenia limbata (Hex) Mayfly Dun
Artistic view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin
5
Female Hexagenia limbata (Hex) Mayfly Dun
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin
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Female Hexagenia limbata (Hex) Mayfly Dun
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin
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Female Hexagenia limbata (Hex) Mayfly Spinner
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Spinner from the White River in Wisconsin
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Male Hexagenia limbata (Hex) Mayfly Dun
Lateral view of a Male Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin
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Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Dun
Dorsal view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Dun from the Long Lake Branch of the White River in Wisconsin
This specimen is really strange, very different in form from any other mayfly I've seen. Unfortunately it was found alone crippled in an eddy and in pretty bad shape, and I couldn't find any others like it.
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Female Hexagenia limbata (Hex) Mayfly Dun
Dorsal view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the White River in Wisconsin

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