Many thanks for the advice. There are two images under Nola delograpta on the ALA (from Victor W Fazio III and Ian McMillan) that are a very good match for this one.
I think we must assume that your specimen is somewhat worn, but yes I agree there is a close similarity to the two images you refer to on the ALA for N. delograpta and I have not been able to find another species which would better match.