Any moth of the lepidopteran family Sphingidae. Found worldwide, these stout-bodied moths have long, narrow forewings and shorter hind wings, with wingspans ranging from 2 to 8 in. (5–20 cm). Many species pollinate flowers while sucking nectar; the proboscis of some species is up to 13 in. (32.5 cm) long. Some hawk moths migrate. The larvae, which are smooth and have a dorsal horn, are called hornworms; larvae of two North American speciesthe tobacco, or southern, hornworm, and the tomato, or northern, hornwormattack tomato, tobacco, and potato crops.