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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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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 Stenonema terminatum Mayfly Spinner Pictures

Lateral view of a Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Ruler view of a Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin The smallest ruler marks are 1 mm.
Dorsal view of a Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin
Male Stenonema terminatum (Heptageniidae) Mayfly Spinner from the Teal River in Wisconsin

This mayfly was collected from the Teal River in Wisconsin on June 8th, 2021 and added to Troutnut.com by Troutnut on June 9th, 2021.


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Male Stenonema terminatum Mayfly Spinner Pictures

Collection details
Location: Teal River, Wisconsin
Date: June 8th, 2021
Added to site: June 9th, 2021
Author: Troutnut
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