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the purple to black caterpillar has long spines on each segment;there are yellow-green stripes and large white dots. the fully-grown caterpillar is up to1.25 inches (3 cm) long . it builds a silky, webbed nest as it feeds, usually eating thistle, mallow, malva, hollyhock, sunflower, or canoal.as the larva grows, it sheds its hard exoskeleton(this called molting).

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13y ago

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