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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.

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.
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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Male Tricorythodes (Trico) Mayfly Dun Pictures

Ruler view of a Male Tricorythodes (Leptohyphidae) (Trico) Mayfly Dun from Mystery Creek #304 in Idaho The smallest ruler marks are 1 mm.
Ventral view of a Male Tricorythodes (Leptohyphidae) (Trico) Mayfly Dun from Mystery Creek #304 in Idaho
Dorsal view of a Male Tricorythodes (Leptohyphidae) (Trico) Mayfly Dun from Mystery Creek #304 in Idaho

This mayfly was collected from Mystery Creek #304 in Idaho on July 23rd, 2022 and added to Troutnut.com by Troutnut on January 15th, 2023.


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Male Tricorythodes (Trico) Mayfly Dun Pictures

Collection details
Location: Mystery Creek #304, Idaho
Date: July 23rd, 2022
Added to site: January 15th, 2023
Author: Troutnut
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