Drepanosiphum platanoidis

Sycamore aphid

Description

The sycamore aphid (Drepanosiphum platanoidis) is a sap-sucking insect found on various maple species, primarily Acer pseudoplatanus. This monophagous aphid completes its life cycle on maples without host alternation. It reproduces both parthenogenetically and sexually, with eggs overwintering on bark crevices. Nymphs hatch in early spring, synchronized with bud burst, and feed on young foliage, forming dense colonies on leaf undersides. Adults are winged and aggregate on leaves during summer, maintaining spacing to reduce competition.

Damage includes leaf curling, chlorosis, and honeydew secretion, which promotes sooty mold formation, impairing photosynthesis and reducing the tree's aesthetic appeal. Severe infestations can weaken trees and inhibit growth. Drepanosiphum platanoidis is widespread in Europe and commonly found in urban parks and natural stands of sycamore maples.

Symptom

Leaves show downward curling, chlorosis, and sticky honeydew deposits. Black sooty mold develops on honeydew-covered surfaces, and dense colonies are visible on the undersides of leaves.

Tree Species: Maple

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes