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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.
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.

Troutnut
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Bellevue, WA

Posts: 2758
Troutnut on May 6, 2007May 6th, 2007, 5:19 pm EDT
I just got back from spending most of two days in the Catskills. I caught my first decent trout of the year (beautiful 19" brown) and on my way back I sampled nymphs at a couple streams and got lots of great stuff. It's 20 minutes past midnight and I'm just about to start an all-night photo session with the new bugs, including some Baetisca obesa nymphs.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Taxon
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Site Editor
Plano, TX

Posts: 1311
Taxon on May 6, 2007May 6th, 2007, 6:21 pm EDT
Jason-

Sounds great; can hardly wait to see them.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

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