The granary weevil, scientifically known as Sitophilus granarius, is a small beetle that primarily infests stored grains, particularly wheat and corn. Adult weevils are about 3 to 5 millimeters long and have a distinctive elongated snout. They lay their eggs inside grains, and the larvae feed on the grain as they develop, leading to significant damage in grain storage facilities. These pests are commonly found in agricultural settings and can cause economic losses due to their destructive feeding habits. Effective control measures include proper storage practices, regular inspections, and the use of insecticides when necessary to prevent infestations.