Weevil

Several types of weevils, including the rice, granary, maize and bean/pea weevils can be encountered in the home. The true weevils have a long snout on the head. The rice weevil is about 3 mm long dark reddish brown, with four pale spots on the upper surface. The granary weevil is slightly larger (4 mm), of the same body style and entirely dark chestnut-brown. 

The egg, larva, and pupa stages of both weevils occur in the grain kernels and are rarely seen. The larvae are white, legless. The life cycle requires about 4 weeks and there may be three to five generations per year. 

They are usually found in grain storage facilities or processing plants, infesting wheat, oats, rye, barley, rice, and corn. Although not often found in the home, sometimes they infest table beans, acorns, chestnuts, birdseed, sunflower seeds, and ornamental corn. They are occasionally found in macaroni and spaghetti.