Granary Weevil

This weevil has been a major pest for centuries. It occurs worldwide in the cooler climates. In the United States, it is usually found breeding from, and including, North Carolina northward.

Adults about 1/8-1/4” (3-4.8 mm) long. Color usually shining reddish brown but sometimes nearly black, elytra (wing covers) lack any pale marks. Punctures or pits on thorax elongated. Wings vestigial (greatly reduced), cannot fly. Male’s snout/beak shorter, wider, with more distinct punctures than that of female’s.

Because its wings are vestigial, the granary weevil is confined to stored grain and is primarily transported by man. The larva typically requires a whole kernel for development but can develop in caked grain material. It attacks all kinds of grains and grain products. When disturbed, it draws its legs up to its body and plays “possum.” Adults are not attracted to light.

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