Walnut Caterpillar

Walnut Caterpillar (Datana integerrima) - 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. Caterpillars are reddish brown to black with white markings and long white hairs. Large larvae are conspicuously fuzzy and may grow up to 2 inches (50 mm) long. Larvae characteristically arch their heads and tails in a defensive posture when disturbed.

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