The Rice Weevil (Sitophilus oryzae) is one of the most destructive stored-grain pests in the world and a significant pest of stored rice, wheat, corn, barley, oats, and other whole grains in Arizona homes and agricultural storage facilities. Adults are small (1/8 inch), dark reddish-brown to nearly black, with four pale reddish-orange or yellowish spots on the wing covers and the characteristic elongated snout (rostrum) of weevils. The wing covers have fine longitudinal striations. Adults can fly and are attracted to light. Like the Angoumois Grain Moth, the Rice Weevil is a primary pest — females chew a small hole in a grain kernel, deposit a single egg inside, and seal the hole with a gelatinous plug. The larva develops entirely inside the kernel, consuming the contents, and the adult emerges by chewing an exit hole. This internal development makes infestations difficult to detect until adults begin emerging in large numbers. In Arizona, the Rice Weevil is most commonly found in stored rice, whole wheat, and corn, and is a significant pest in homes that store large quantities of these grains. In Arizona's warm climate, it can complete a generation in 4–6 weeks.