Eggs are laid one by one under old leaves of the hostplant, and are green or grey-blue. None of the three species are forced to use a single family of host plant. Many of the types of plants used are in the families Solanaceae, Verbenaceae, Oleaceae, Bignoniaceae, and others. The larvae are strong, reaching 120-130 mm, with a tail horn that stands out or can be seen easily. All three species have three larval color forms: usually green, brown, or yellow. Larvae do not move much, and will click their mandibles or even bite if threatened. When mature, they burrow underground and excavate a small chamber where they pupate.