Gypsy Moths are usually only seen around mid-summer. The male moths are a grayish brown color and can fly. The female moths cannot fly, are larger in size and have a whitish color with black markings. Females lay egg masses on tree trunks, outdoor furniture and the sides of buildings, which appear as tan or buff-colored hairs. The larvae hatch in the spring. Gypsy Moth caterpillars are 2-inches long with tufts of brown and yellow hair extending from their sides. At the head end of their bodies, they have 10 blues spots on their back, followed by red spots. As a group, caterpillars do not spin tents, but individuals will climb down trees to spin a loose, leathery cocoon to pupate. The gypsy moth population explodes about every four years due to natural predator cycles.
Favorite Plants
Gypsy Moths feed on hundreds of species of trees, but prefer oaks and aspen.
Damage
Large outbreaks of gypsy moths can definitely defoliate and kill trees. Caterpillars generally feed at night and will migrate down trees during the day, sometimes abandoning one tree and eating their way through a path of plants on their way to another.
Organic Methods of Control:
Cultural or Mechanical
Clean up leaves and limbs around trees in the fall.
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