Granary Weevils
NuisanceWhat it is
A stored-grain weevil whose larvae develop inside whole kernels of wheat, corn, rice, and other grains. Adults cannot fly and may be found in bulk grain or infested pantry products.
How to recognize it
Dark brown beetles with a long snout that cannot fly, and hollowed-out grain kernels.
Where you will find it
Bulk grain, pantries, and stored wheat, corn, or rice.
Why it matters
Larvae grow inside whole kernels, so infestations can go unseen until adults appear.
What to do
- Check dry goods such as flour, cereal, rice, nuts, pet food, and spices, and throw out anything infested.
- Move remaining food into airtight containers and vacuum shelves and crevices where crumbs collect.
- Look for the original source, such as an old open package at the back of the pantry.
- Contact a licensed pest professional if the problem returns or you cannot find the source.
When to call a professional
- They keep returning after you clean and discard infested food.
- You find larvae or webbing in several areas.
- You store or sell food commercially.
Related pests
Almond Moths
A stored-product moth (often called the tropical warehouse moth) whose larvae infest nuts, grains, dried fruit, seeds, chocolate, and other stored foods. Larvae produce webbing in infested products.
Read more →Cigarette Beetles
Small reddish-brown stored-product beetles whose larvae feed on tobacco, spices, pet food, dried plant material, grains, and many packaged foods. Adults are strong fliers and may be seen near windows or lights.
Read more →Drugstore Beetles
Small brown stored-product beetles whose larvae feed on a very wide range of dried foods, spices, pharmaceuticals, pet foods, books, and plant materials. They can chew through thin packaging.
Read more →Flour Beetles
Stored-product beetles that infest flour, cereal, meal, spices, and other processed grain products. They generally feed on broken or milled material rather than intact kernels.
Read more →This page is general information, not a diagnosis. Pests vary by region and situation, and an on-site inspection is the reliable way to know what you have.