Grain weevils are small insects that belong to the family Curculionidae. They are commonly found in stored grains, such as wheat, rice, and corn. These pests have elongated bodies and distinctive snouts, which they use to bore into grains to lay their eggs. The larvae then feed on the grain, causing damage and contamination. There are several species of grain weevils, including the rice weevil and the wheat weevil. They thrive in warm, dry environments and can quickly multiply if not controlled. Effective prevention methods include proper storage, regular inspections, and maintaining cleanliness in areas where grains are kept.