Sawtooth Grain Beetle

 Identification and Control

Proper identification is an important first step in controlling ants.

Plodia interpunctella

How to Identify an 

Sawtooth Grain Beetle

Sawtooth grain beetles are a small brown beetle measuring only 1/10 inch (2.5mm) in length. The edges of the thorax have 6 saw-like projections on each side.

Where do they come from?

Sawtooth grain beetles are a common pest indoors and attack cereal, dried fruits, breakfast cereals, sugar, chocolate, macaroni, flour, meal, bran, rolled oats, bird seed, and brown rice.

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What do they look like?

Sawtooth grain beetle on a grain
Size comparison of a sawtooth grain beetle on a piece of grain
Saw-like thorax of the sawtooth grain beetle

Where do they live?

Any grain or processed grain product including oats; pet foods, seeds, dried fruits, rice grain meals, sugar, drugs, pasta, tobacco, and chocolate.


Plodia interpunctella



Grains/grain products, cereals, dried fruits, seeds, nuts, powdered milk, biscuits, chocolate, candy, spices, dry pet food, bird seed, etc.

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