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.

Stream photos

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

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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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Definition of 'cubito-anal crossvein' in Stoneflies

Cubito-anal crossvein: The cubito-anal crossvein (denoted cu-a) is a crossvein connecting the cubitus to the first anal vein, typically very close to the base of both veins in stoneflies.

These other words reference the same concept: cubitoanal crossvein, cu-a crossvein, crossvein cu-a, cu-a.

Blue-winged OlivesBaetis

Definition of 'cubito-anal crossvein' in Stoneflies

Definition of 'cubito-anal crossvein' in Stoneflies

Blue-winged Olives
Baetis