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The Lymantria dispar dispar (LDD - formerly known as gypsy moth) is the most destructive forest insect pest to infest New Jersey's forests. Repeated defoliation by LDD represents a serious threat to New Jersey woodland and shade tree resources.
- Gypsy Moth - The Official Web Site for The State of New Jersey
Life Cycle The gypsy moth passes through four stages: egg,...
- Gypsy Moth - The Official Web Site for The State of New Jersey
Life Cycle The gypsy moth passes through four stages: egg, larva, pupa, and adult (moth stage). Only the larvae damage trees and shrubs. Gypsy moth egg masses are laid on branches and trunks of trees, but egg masses may be found in any shel-tered location. Egg masses are buff colored when first laid but may bleach out over the winter months
The gypsy moth develops in four stages: egg, lar-vae (caterpillars), pupa (transfor-mation stage), and adult (moth). Only the larval stages are destructive. Eggs are deposited in a cluster called an “egg mass” from June into August. The oval egg masses vary in size, but are generally about 1 inch long and 1/2 inch wide.
Lymantria dispar dispar, commonly known as the gypsy moth, [1] European gypsy moth, LDD moth, or (in North America) North American gypsy moth or spongy moth, [2] is a species of moth in the family Erebidae.
Life Cycle. Eggs laid between July - September, dormant until the following spring; Eggs hatch early spring through mid-May; Caterpillars forage on leaves of host trees and shrubs for 6 - 8 weeks, increase in size through a series of molts or instars; Pupate (cocoon) late June - early July, 7 - 14 days; Adult moths emerge in late June - mid July.
The life-cycle of the gypsy moth is as follows. The gypsy moth has one generation per year. Overwintering eggs hatch when host trees produce new leaves, from late March to late May, depending on the climatic situation.
Gypsy moths are among America’s most destructive, non-native, invasive forest insect pests. They defoliate millions of acres of forests and urban trees annually. Each gypsy moth egg mass will produce up to 1,000 new caterpillars.
