Green, purple, brown, pink, or white body; oval abdomen with a pair of dorsal tubes (siphunculi) that secrete alarm pheromones or defensive fluids; relatively long legs. Most aphids are wingless; they produce winged offspring only to explore new food sources and start new colonies (see Alates).
Aphids excrete honeydew that some ant species harvest while protecting the aphids and their offspring.
Aphids feed on plant sap, which makes them detrimental to agriculture.
Widespread in urban gardens, agricultural fields, woodlands, and shrublands.