woolly apple aphid

The woolly apple aphid (Eriosoma lanigerum) is a cosmopolitan aphid that primarily feeds on the bark of apple and other trees, affecting both aerial parts and roots. These soft-bodied insects, about the size of a pinhead, are known for their sap-sucking habits and often have a white, woolly appearance due to wax secretions.12

Aphids can be significant plant pests, potentially stunting growth, causing galls, transmitting plant viruses, and deforming plant parts. Their life cycle typically involves wingless females reproducing without fertilization, producing live young. Eventually, winged adults emerge to find new plants. In cooler climates, they lay eggs that survive winter, while warmer climates may see continuous generations. Natural enemies like ladybird beetles and lacewings help control aphid populations, but insecticides are also used when necessary.2