A tussock moth (Lymantria dispar or Porthetria dispar or Ocneria dispar) native regarding the old-world, but inadvertently introduced into east Massachusetts about 1869, where its caterpillars have done great injury to fruit, color, and forest trees of numerous types. The male gypsy moth is yellowish-brown, the female white, and bigger than the male. In both sexes the wings tend to be marked by dark lines and a dark lunule. The caterpillars, whenever full-grown, have actually a grayish mottled appearance, with blue tubercles on anterior and purple tubercles regarding the posterior an element of the human anatomy, all offering increase to long yellow and black colored hairs. They often pupate in July therefore the moth seems in August. The eggs are laid on tree trunks, rocks, etc., and hatch in spring.