Sitophilus zeamais, commonly known as the maize weevil, is a small beetle that primarily infests stored grains, particularly maize and other cereals. Adult weevils are about 2.5 to 4 millimeters long, with a distinctive elongated snout. They are typically dark brown or black and can be identified by their oval shape and the presence of small pits on their bodies. The life cycle of Sitophilus zeamais includes egg, larval, pupal, and adult stages. Females lay eggs inside the grains, and the larvae feed on the grain as they develop. This feeding can lead to significant damage and loss of stored food products, making them a concern for farmers and grain storage facilities.