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Red-Humped Caterpillar

USDA Forest Service - Region 8 Archive, USDA Forest Service, Bugwood.org
 Schizura concinna (J.E. Smith) - Larva(e)    Mature redhumped caterpillars are about 1 to 1-1/2 inches long. The head and a conspicuous hump on the body are red. The body is yellow or reddish with white, yellow and black stripes and rows of black tubercles.
A defoliator that prefers apple, but also feeds on plum, cherry, pear, apricot, as well as some other fruit, nut and shade trees.
Overwinters as a larva inside a cocoon. Pupates in early summer and adults emerge end of June. In July, females begin ovipositing on undersides of leaves near branch ends. Young larvae work down the branch, at first eating only the undersides of leaves but later consuming entire leaves. When disturbed, they discharge a defensive odorous fluid. When mature, in August and September, they descend to the ground and hide under leaves or debris, where they form cocoons.
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