Japanese maple leafhopper

Japananus hyalinus

Description

Japananus hyalinus, commonly known as the Japanese maple leafhopper, is a leafhopper species originally native to East Asia. It is associated primarily with maple trees (Acer spp.), including Acer campestre, A. palmatum, and A. pseudoplatanus. This insect was introduced to Europe, North America, and Australia through the trade of cultivated maples. In Europe, it was first recorded in Austria and Romania in 1961 and has since spread widely across the continent.

The species is univoltine, with eggs overwintering in the nodes of branches. Adults and nymphs feed on sap from leaves, which can lead to metabolic stress in host plants. Although J. hyalinus does not currently act as a known vector for diseases, its sap-sucking activity can reduce plant vigor and impact the aesthetic appearance of leaves through discoloration and minor deformities.

Symptom

Affected leaves exhibit discoloration, stippling, and small puncture marks from feeding. Nymphs and adults are visible on leaf surfaces, often clustered on veins.

Tree Species: Maple

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: Yes

Present in EU: Yes