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Tent Caterpillar

A tree or bush with a nest of tent caterpillars

The forest tent caterpillar (Malacosoma disstria) is an insect found throughout United States and Canada where hardwoods grow. The caterpillar will consume foliage of most hardwood species but prefers sugar maple, aspen and oak. Region wide outbreaks occur at intervals varying from 6 to 16 years in northern areas while annual infestations occur in the southern range.