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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 Baetisca laurentina (Armored Mayfly) Mayfly Spinner Pictures

Male Baetisca laurentina (Baetiscidae) (Armored Mayfly) Mayfly Spinner from the Bois Brule River in Wisconsin
Lateral view of a Male Baetisca laurentina (Baetiscidae) (Armored Mayfly) Mayfly Spinner from the Bois Brule River in Wisconsin
Male Baetisca laurentina (Baetiscidae) (Armored Mayfly) Mayfly Spinner from the Bois Brule River in Wisconsin

This mayfly was collected from the Bois Brule River in Wisconsin on June 1st, 2005 and added to Troutnut.com by Troutnut on May 24th, 2006.


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Male Baetisca laurentina (Armored Mayfly) Mayfly Spinner Pictures

Collection details
Location: Bois Brule River, Wisconsin
Date: June 1st, 2005
Added to site: May 24th, 2006
Author: Troutnut
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