Sphinx gordius (Cram.)
Courtesy Janice Stiefel
Identification Covell, Moths of Eastern North America, Page 35 -- The thorax is black with grayish-brown edges near the wing bases. The forewing is black to gray with white dusting. The lines are diffuse and blackish. The reniform spot is white, usually distinct. The hindwing is black and brown with diffuse markings. The hindwing fringe is white with little or no dark checkering (unlike the forewing). The caterpillar host plants are larch, apple, blueberries, sweetfirm and spruce.