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The Specimen

Eurylophella (Chocolate Duns) Mayfly SpinnerEurylophella (Chocolate Duns) Mayfly Spinner View 12 Pictures
Collected June 4, 2005 from the Teal River in Wisconsin
Added to Troutnut.com by on May 24, 2006

The Discussion

TroutnutJuly 10th, 2006, 12:27 pm
Administrator
Bellevue, WA

Posts: 2689
I've got several specimens of this small Ephemerellid species, and my best guess is Ephemerella needhami, but I'm still unsure. There are species of Eurylophella with similar stripes whose nymphs were common at the same time and in the same general location, but I didn't do really comprehensive nymph collection.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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