The caterpillars are seen much more frequently than adult moths. They feed mostly at night and later pupate in unlined cells in the soil. Although they are called tomato worms or hornworms, they also attack the foliage of potatoes, eggplants, green peppers, and various weeds. Persistent rumors that caterpillars can "sting" with their horns are totally false. These moths are known to southern tobacco-growing states as "tobacco flies."

description Wingspan 3 1/2-4 3/8" (90-110 mm). Wings mouse-gray, streaked with black and brown. Hind wings strong, pointed. Fore wings paler with 2 zigzag dark lines crossing middle of wing. Body heavy, torpedo-shaped. Head prominent, eyes and palps large, extended tongue at least as long as body. Abdomen above has 5 pairs of yellow spots. Caterpillar, 3-4" (75-102 mm), is pale or dark green with a black horn at rear, V-shaped white mark at side of each segment.

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