Looks like a miniature Rustic Sphinx
--dark brown to black with white dusting. Rustic Sphinx has orange spots on abdomen, Pawpaw has white spots. These spots are visible only when the wings are spread. Forewing patterns are very similar, but there are subtle differences--see photos and Internet references. Caterpillar is pale/bright green, six white stripes on abdomen--no bands towards head. Spiracles small, black, with white outer ring.