Two species damage tomato. General color is green with white diagonal lines on its side. Prominent horn on rear gives name to the group. Larvae measure up to 4 inches long.
Damage is done by larvae eating foliage and sometimes fruit on eggplant, pepper, and tomato.
It passes the winter as a pupa, which gives rise to the hawk moth during late spring. Pupal stage lasts about 3 weeks, except for the overwintering generation.