Life Cycle: Adults emerge from pupae which overwinter in the soil at the base of a host tree. Yellownecked caterpillar, Datana ministra (Drury) (Lepidoptera: Notodontidae), on oak. ![]() They have a prominent projection on the first abdominal segment and feed together. Caterpillars grow to 1-1/3 inches long and are variegated brown. Smith) occurs on apple, cherry, rose and other woody ornamental plants. The unicorn caterpillar, Schizura unicornis (J. They feed in groups (aggregates) on leaves of cherry, crabapple, elm, maple, peaches, oak and walnut and display a defensive posture, raising the head and tip of the abdomen, when disturbed. Caterpillars grow to 2 inches long, have yellow stripes along their orange to black body, and have a yellow “neck” just behind their black head capsule. Larvae characteristically arch their heads and tails in a defensive posture when disturbed.Īnother common species of Notodontidae is the yellownecked caterpillar, Datana ministra (Drury). ![]() Large larvae are conspicuously fuzzy and may grow up to 2 inches (50 mm) long. Caterpillars are reddish brown to black with white markings and long white hairs. Scientific Name: Datana integerrima Grote and Robinsonĭescription: The adult moth has a 2-inch wing span, is brown and tan with a dark region on the body behind the head and has wavy, dark lines across the front wings. Walnut caterpillars, Datana integerrima Grote and Robinson (Lepidoptera: Notodontidae), early stage (instar) caterpillars.
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