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Something in Heptageniidae - Maccaffertium

Something in Heptageniidae - Maccaffertium
East Fork of Chestnut Creek along the Blue Ridge Parkway, Grayson County, Virginia, USA
I collected the nymp on 4/30/17 and it emerged on 5/5/17. It's representative of a dozen or so individuals of the same species.

Moved from Mayflies.

Hi Robert-

I believe this female imago to be of genus Maccaffertium.

Moved from ID Request.

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