This appears to be an American (or common) snout ( _Libytheana carinenta_ ).
The "snout" of this butterfly is very distinctive as is the squarish tip of the forewings (the part projecting furthest back to the left in your picture.
Did you see the top surfaces of the wings? They should have had a dusty orange and brown pattern with white spots.
These butterflies are found from Texas to Canada and related species are seen in the Caribbean. ![American Snout \(Libytheana carinenta\), Merrimac Farm Wildlife Management Area, Nokesville, Virginia by Judy Gallagher]( Image: Judy Gallagher CC BY 2.0.