The specific epithet anthracitaria is derived from the Latin word anthracites (like coal) to describe the black maculation of the forewing and thorax. (1)
Bryolymnia anthracitaria is easily distinguished from the other members of the genus by the wide black basal patch, and the oblong black patch covering the middle of the outer half of the forewing.
Lafontaine, J.D., Walsh, J.B., Holland, R.W., 2010. A revision of the genus Bryolymnia Hampson in North America with descriptions of three new species (Lepidoptera, Noctuidae, Noctuinae, Elaphriini). ZooKeys 39. p. 201, figs. 17-19, 31, 39. (4)