description Grain Weevil Overview
The grain weevil, Sitophilus granarius, is a flightless snout beetle that infests stored wheat, barley, oats, rye, rice, and other cereal grains. Adult beetles are dark brown to nearly black, with a long curved snout, and the larvae develop inside individual kernels after the female drills an opening and lays an egg. Because adults cannot fly, the species spreads mainly through infested grain, containers, and other forms of human transport.
help Grain Weevil FAQ
What grains does the grain weevil infest?
The grain weevil, Sitophilus granarius, infests stored wheat, barley, oats, rye, rice, and other cereal grains. It is mainly a pest of stored grain rather than growing field crops.
Can grain weevils fly?
No. Sitophilus granarius is a flightless snout beetle. Adults are usually dark brown to nearly black and have a long, curved snout.
Where do grain weevil larvae develop?
The larvae develop inside individual grain kernels after the female lays an egg there. This hidden development can make an infestation difficult to notice until adults emerge or damaged grain is found.
What is the scientific name of the grain weevil?
Its scientific name is Sitophilus granarius. It belongs to the snout beetle group and is recognized by its long rostrum, or curved snout, and its association with stored cereal grain.
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