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Gastropacha quercifolia

Lappet moth

Description

Gastropacha quercifolia, known as the lappet moth, is a quite large nocturnal moth whose caterpillars feed on leaves of various deciduous trees and shrubs, especially oaks (Quercus spp.), birches (Betula spp.), and willows (Salix spp.). This univoltine species overwinters in the egg stage, with larvae appearing in spring and pupating in summer. Adults fly from June to August. The caterpillars feed openly on foliage and can occasionally cause significant defoliation when populations are high. It is widespread across Europe, particularly in warmer lowland and hilly regions. While usually not a major pest, local outbreaks can affect the aesthetic appearance and potentially the vitality of host trees.

Symptom

Irregular holes and marginal feeding on leaves; in heavy infestations, partial or complete defoliation of branches.

Tree Species: Elm, Birch, Oak, Hornbeam, Maple, Lime, Plum, Poplar, Willow

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes