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Leucoptera malifoliella

Leucoptera malifoliella

Description

Leucoptera malifoliella = Leucoptera scitella, commonly known as the pear leaf blister moth, is a small moth belonging to the family Lyonetiidae. This moth is primarily found in Europe and is known for its destructive impact on pear trees. The larvae of Leucoptera malifoliella create distinctive spots on the leaves by mining between the upper and lower surfaces, leading to reduced photosynthesis and overall tree health. It has several generations in central Europe. Pupae overwinter. Adult moths are small and white with a wingspan of about 6-8 mm, and they lay their eggs on the leaves of host plants. Infestations can lead to significant agricultural damage, necessitating careful monitoring and management in orchards.

Symptom

Initially, small, discolored spots appear on the leaves of trees where the larvae have begun to feed. As the larvae continue to mine between the upper and lower surfaces of the leaves, the affected areas may turn brown or necrotic, leading to premature leaf drop. Spots consist of spiral-like layers. Severe infestations can significantly reduce photosynthesis, weaken the tree, and reduce fruit yield. Additionally, the presence of numerous small, white adult moths around the trees during the growing season can be an indicator of an ongoing infestation.

Tree Species: Birch, Cherry, Pear, Rowan, Whitebeam, Maple, Alder, Blackthorn

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes