What is a "greenfly"?

A greenfly is a small insect belonging to the superfamily Aphidoidea. It is characterized by its soft body and sucking mouthparts, which it uses to extract sap from plants. Greenflies are typically found in large numbers on the stems, leaves, and buds of various plants. They reproduce rapidly, giving rise to colonies that can cause damage to crops and ornamental plants by depleting their resources and spreading diseases. Greenflies come in different colors, including green, yellow, and black. They secrete a sticky substance called honeydew, which can attract other insects like ants. While greenflies are considered pests in agriculture and gardening, they also serve as a food source for beneficial insects and can contribute to ecological balance.