Variable larva in terms of ground color as well as maculation, and one of three small Rosaceae-feeders (other two: lincolnana, blandula) that sport a dark dorsal "racing stripe" in a fair proportion of last instars. A5 horn is usually short (1-2 mm). Wild foodplants also vary, with some geographical component, including various Crataegus, Aronia arbutifolia, Malus angustifolia, Amelanchier. Denizen of mesic/wet hardwood forests in the few remaining populations in coastal NJ and MA (others in midwest and New England long extirpated), and more varied habitats south and west.