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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 Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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 Siphlonurus quebecensis (Gray Drake) Mayfly Spinner Pictures

Lateral view of a Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Dorsal view of a Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Ventral view of a Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Male Siphlonurus quebecensis (Siphlonuridae) (Gray Drake) Mayfly Spinner from the Namekagon River in Wisconsin

This mayfly was collected from the Namekagon River in Wisconsin on June 2nd, 2005 and added to Troutnut.com by Troutnut on May 24th, 2006.


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Male Siphlonurus quebecensis (Gray Drake) Mayfly Spinner Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: June 2nd, 2005
Added to site: May 24th, 2006
Author: Troutnut
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