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GYPSY MOTH

Biology

  • Eggs are laid in masses.
  • Egg masses are a buff color, irregular in shape, and covered with hair from the female.
  • Eggs hatch in mid-spring.
  • Larvae pass through 5-6 stages (instars) before they enter the pupae stage.
  • Adult females are white with black markings.
  • Adult males are tan.
  • Females are incapable of flight.

Distribution/Habits

  • Gypsy Moths are pests of trees and ornamentals.
  • Egg masses are often found on the underside of tree branches.
  • Larvae disfigure several types of trees, but most commonly oak and aspen.
  • Larvae feed on tree leaves during the day and hide under debris at night.
  • Newly hatched larvae travel by hanging from trees by silken threads – they are then caught by the wind and distributed.
  • Adult females can be found clinging to tree limbs.
  • Adult males are usually fluttering around the females.