Could this in fact be a Northern? The antennae are orange-tipped which the Northern has (unlike the Pearly and Tawny). The patterning on the male and female underside hindwing matches the Northern better.
http://www.cbif.gc.ca/eng/species-bank/butterflies-of-canada/northern-crescent/?id=1370403265706
Moving to Northern, pending further commentary.

My primary reason for Tawny was that the antennal clubs appear black on the female and black with white tip on the male, especially when I magnify the image. The left antennal club, which is shaded, of the male is white tipped and the right one appears light yellow tipped which is probably an affect of light'
I can find many images of ventral views on Butterflies of America that look like both species so unable to separate by below view.

Thank you, there are very few records of Tawny Crescent from my area.