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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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 Paraleptophlebia sculleni Mayfly Spinner Pictures

This specimen (and a few others I collected but didn't photograph) appear to represent the first finding of Paraleptophlebia sculleni outside the Oregon Cascades, although it is not a monumental leap from there to the Washington Cascades. The key characteristics are fairly clear.

Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Dorsal view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
This specimen had three fragile tails, one of which came off during handling.

Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Ventral view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
This ventral view matches Figure 14 from Harper and Harper 1986, leading to the identification of Paraleptophlebia sculleni.

Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington
Ruler view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington The smallest ruler marks are 1 mm.
Lateral view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from Mystery Creek #249 in Washington

This mayfly was collected from Mystery Creek #249 in Washington on July 25th, 2019 and added to Troutnut.com by Troutnut on July 26th, 2019.


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Male Paraleptophlebia sculleni Mayfly Spinner Pictures

Collection details
Location: Mystery Creek #249, Washington
Date: July 25th, 2019
Added to site: July 26th, 2019
Author: Troutnut
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