The adult flour beetles are reddish-brown in color, flattened, and about 3/16 (3.5mm) long. The eyes of the confused flour beetle wrap around the sides of thew head from the top to the bottom.
Flour beetles are a common pest of flour. They are unable to feed on whole undamaged grain. They are a common pest in flour mills but are also brought into homes on cereal, flour, and dried pet food. From there they can infest the pantry.