« Back

Lymantria dispar

Gypsy moth

Description

The gypsy moth is a foliage-feeding insect that periodically reaches outbreak levels, causing widespread defoliation of broadleaf forests across much of Central and Southern Europe. Gradation usually lasts for 2-4 years and it is repeated every 5-10 years (more frequently in southern parts of Europe). The adults hatch from July to August. Only male fly. After mating, the female lays eggs in a group in July and August close to the place where she hatched. Larvae generally prefer oaks, but may feed on many different species of trees and shrubs. On average, one egg masse contains 300-400 eggs which overwinter. Larvae hatch in April. Large, colourful, downy larvae are 4-6 cm long when pupate.

Symptom

Defoliation of the leaves. Presence of hairy caterpillars.

Tree Species: Black Locust, Beech, Cherry, Blueberry, Oak, Hawthorn, Apple Tree, Maple, Poplar, Willow

Part of a plant- attacked: Leaf / Needle

Pest significance: Very harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence