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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 Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Male Mystacides sepulchralis (Leptoceridae) (Black Dancer) Caddisfly Adult from the West Branch of Owego Creek in New York
This was one of many of its species which were gathered in small, low-flying swarms of about a dozen insects near the alder trees in the afternoon on a small stream.
Taxon
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Site Editor
Plano, TX

Posts: 1311
Taxon on Aug 23, 2006August 23rd, 2006, 8:11 pm EDT
Based on wings being shiny black rather than dull, and it not having been collected in the West, it is most likely M. sepulchralis.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Aug 24, 2006August 24th, 2006, 4:26 am EDT
Thanks Roger. I'm glad someone around here knows their caddisflies!

Now that I've finally finished getting the new site up, I'm going to start learning my bugs a little better too, especially my caddisflies.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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