Brevicoryne brassicae, commonly known as the cabbage aphid, is a small insect belonging to the family Aphididae. It is a pest that primarily feeds on plants from the Brassicaceae family, such as cabbage, broccoli, and mustard greens. These aphids have a soft, pear-shaped body and can vary in color from pale green to yellow or even pink. They reproduce rapidly and can cause significant damage to crops by sucking sap from the plants and transmitting viral diseases.