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Gypsy Moth

USDA APHIS PPQ Archive, USDA APHIS PPQ, Bugwood.org
gypsy moth - Lymantria dispar (Linnaeus) - Larva(e)   The gypsy moth is one of the most notorious pests of hardwood trees in the Eastern United States. Since 1980, the gypsy moth has defoliated close to a million or more forested acres each year. In 1981, a record 12.9    million acres were defoliated. This is an area larger than Rhode Island, Massachusetts, and Connecticut combined.
In wooded suburban areas, during periods of infestation when trees are visibly defoliated, gypsy moth larvae crawl up and down walls, across roads, over outdoor furniture, and even inside homes. During periods of feeding they leave behind a mixture of small pieces of leaves and frass, or excrement.

Gypsy moth infestations alternate between years when trees experience little visible defoliation (gypsy moth population numbers are sparse) followed by 2 to 4 years when trees are visibly defoliated (gypsy moth population numbers are dense).
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