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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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Sweltsa (Sallfly) Stonefly Nymph Pictures

Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Ventral view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
This image is heavily enhanced in false color to show the setae on the tails.

Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington
Ruler view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Icicle River in Washington The smallest ruler marks are 1 mm.

This stonefly was collected from the Icicle River in Washington on June 3rd, 2022 and added to Troutnut.com by Troutnut on June 4th, 2022.


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Sweltsa (Sallfly) Stonefly Nymph Pictures

Collection details
Location: Icicle River, Washington
Date: June 3rd, 2022
Added to site: June 4th, 2022
Author: Troutnut
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