An invasive insect that made its way to New England in the late 19th century and is firmly established in Maine, the browntail moth has been blamed for defoliating 62,600 acres in Sagadahoc County alone this fall, as caterpillars that hatched in August spun winter nests holding hundreds of tiny larvae. Below, each of the leaf clusters seen in the trees is actually a browntail moth nest.

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