Anthrax eumenes Osten Sacken, 1886 Hemipenthes seminigra is a fly in the family Bombyliidae (bee-flies) endemic to North America.

[1] The species is 8–12 mm long, with a brown-black body marked by a strip of white hairs along the thorax.

The short, round black head bears short antennae.

The wings often have a white spot in the center.

This article related to members of the fly family Bombyliidae is a stub.