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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 Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Nymph from the East Fork Issaquah Creek in Washington
This specimen keys to the Epeorus albertae group of species. Of the five species in that group, the two known in Washington state are Epeorus albertae and Epeorus dulciana. Of the two, albertae has been collected in vastly more locations in Washington than dulciana, suggesting it is far more common. On that basis alone I'm tentatively putting this nymph in albertae, with the large caveat that there's no real information to rule out dulciana.
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.

Updates from May 15, 2012

Updates from May 15, 2012

Closeup insects by Bnewell from the Touchet River in Washington

This first picture is in the dun stage.

Male Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from the  Touchet River in Washington
Male Neoleptophlebia heteronea (Leptophlebiidae) (Blue Quill) Mayfly Spinner from the  Touchet River in Washington

Comments / replies

Marsha
Posts: 1
Marsha on Jun 12, 2012June 12th, 2012, 2:41 pm EDT
Jason, I work for a not-for-profit company, Professor Garfield, which, in conjunction with the state of Indiana and Ball State University, is putting together an educational web-site for migrant children. We are building science modules. One of our needs for our life cycle modules are photo/video images of dragonfly nymphs, eggs, and dragonflies laying eggs. Would you give permission for us to use your video/photo of a dragonfly nymph? Do you have and could we use any other dragonfly life stage images you have?

Best to you-- Marsha Jacobson
Martinlf
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Moderator
Palmyra PA

Posts: 3047
Martinlf on Jun 12, 2012June 12th, 2012, 6:09 pm EDT
Marsha, you might PM Jason directly. I don't know how busy he is, but if he's in the field he might not check in immediately. A PM may show up on his email, alerting him to your request.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Jun 12, 2012June 12th, 2012, 6:23 pm EDT
Marsha, you're welcome to use anything I have here on the site. I don't have anything other than what's online, though.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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