![]() ![]() The horn of the tobacco hornworm is red, while the horn of the tomato hornworm is dark blue or black. ![]() Larvae are green with a distinct "horn" on the top of the tail end. The eggs hatch in approximately one week and larvae begin feeding on foliage.The larvae of both species feed for 3-4 weeks, molt five times, and may reach 4 inches in length and 1/2 inch in width when fully ground. The spherical greenish-yellow eggs of both species are deposited singly on the undersides of host plant leaves. There are two species of hornworm that feed on tomatos - tobacco hornworm ( Manduca sexta) and tomato hornworm ( Manduca quinquemaculata). Larvae consume large amounts of foliage on peppers, tomatoes, eggplant, potatoes, and related solanaceous weeds. ![]() These large caterpillars typically appear in small numbers and cause their impressive feeding damage to just a few leaves or plants. Late July and early August are usually the time when we see tomato hornworms. ![]()
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