Granary Weevil

Scientific Name: Sitophilus granarius

Order & Family: Order Coleoptera, Family Curculionidae

Size: 3 mm to 5 mm in length

Granary Weevil

Natural Habitat

Commonly found in grain storage facilities, pantries, and mills. Unlike other weevils, they are almost exclusively found in human-stored grain environments.

Diet & Feeding

Feeds on a variety of whole grains including wheat, oats, rye, barley, rice, and corn.

Behavior Patterns

Flightless insects that use their snout to bore holes into grain kernels where the female lays a single egg. The larvae develop inside the kernel, hollowing it out.

Risks & Benefits

A significant economic pest that destroys stored food products. They pose no direct health risk to humans (non-toxic and do not bite), but contaminated food is usually considered unfit for consumption.

Identified on: 2/20/2026