Saddleback-caterpillar definitions

The brown and green larva of a moth (Sibine stimulea) of the eastern United States, having a brown saddle-shaped mark on its back and stinging spines that are mildly poisonous.
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A caterpillar - the larva of a moth native to the eastern U.S., (Sibine stimulea) - which usually has a green and brown saddle-shaped mark on its back.
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