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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.

Lateral view of a Female Sweltsa borealis (Chloroperlidae) (Boreal Sallfly) Stonefly Adult from Harris Creek in Washington
I was not fishing, but happened to be at an unrelated social event on a hill above this tiny creek (which I never even saw) when this stonefly flew by me. I assume it came from there. Some key characteristics are tricky to follow, but process of elimination ultimately led me to Sweltsa borealis. It is reassuringly similar to this specimen posted by Bob Newell years ago. It is also so strikingly similar to this nymph from the same river system that I'm comfortable identifying that nymph from this adult. I was especially pleased with the closeup photo of four mites parasitizing this one.
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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Zugbuggin
Douglasville, Ga

Posts: 3
Zugbuggin on Mar 9, 2012March 9th, 2012, 3:29 pm EST
Do Early Blacks hatch as traditional Stoneflys do by crawling out of the water before shedding the nymph shuck or do they hatch as most Mayflies do by swimming to the surface and sheading the nymph shuck at the surface or like Quill Gordons do sheading the nymph shuck on the bottom then swimming to the surface??? I have heard all three several times just wanting to know which is true.
Wiflyfisher
Wiflyfisher's profile picture
Wisconsin

Posts: 622
Wiflyfisher on Mar 9, 2012March 9th, 2012, 3:50 pm EST
They crawl out of the water, or right along the shoreline. I have never heard of a stonefly that hatches in the water like mayflies. See Troutnut's stonefly section http://www.troutnut.com/hatch/13/Insect-Plecoptera-Stoneflies.

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