Expanse 34 m. m. Length of body 14 m. m. Eyes hairy; antennae of the male simple; villosity of the palpi coarse; thorax provided with the usual fore and hind tufts; abdomen short, stout and untufted; ground color of the anterior wings gray without ochreous or brown admixture, as in M. lorea Guen.; the ordinary spots are tolerably distinct, concolorous, black encircled, the reniform filled below with black, the clavifor small; the median lines are simple, black and conspicuous, the interior line perpendicular, forming a triangular projection above the orbicular spot, which it touches.