As a group, Duskywing butterflies share many characteristics. As a result, precise identification is difficult. I'll venture a guess that this is a Columbine Duskywing. If I'm wrong, feel free to offer a correction.OK... I'm wrong. It's a Juvenal's Duskywing. The link has been updated to reflect that fact.
To learn more about this busy creature, click the title, above.