Poanes zabulon
The Hobomok Skipper has a more northern range.  It has a different flight period.  They also have more rounded wings.  The upper side of the male Hobomok Skipper's wings has thicker dark brown edges.  The underside of the male's hind wing does not have the yellow spot in the brown basal patch.  While the female Zabulon Skipper has one form, the female Hobomok Skipper has two forms.  There is the normal form and the pocahontas form.  The upper side of the pocahontas form has smaller glassy spots.