Aphis euonymi

Spindle aphid

Description

Spindle aphid Aphis euonymi is an aphid species specialized in infesting plants of the Euonymus genus, particularly the European spindle (Euonymus europaeus). Adults are reddish-brown to dark brown with transverse wax dust bands. Their body size ranges from 1.7 to 2.9 mm. This species reproduces parthenogenetically during the growing season, with winged males and females appearing in autumn to lay eggs on the branches of host plants. Damage caused by sap-sucking can weaken the host plant, deform leaves, and reduce its aesthetic value. The production of honeydew encourages the growth of black sooty molds (Capnodium sp.), which further limit photosynthesis. The species is widespread across Europe.

Symptom

Infested leaves develop curled, deformed areas with pale spots. The leaf surfaces may become sticky due to honeydew, often leading to secondary fungal growth. Aphids cluster on young shoots and the undersides of leaves.

Tree Species: Spindle

Part of a plant- attacked: Leaf / Needle, Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes