Pest Status: Sawtoothed grain beetles are common pests of stored cereal products, both commercial and in the home.
Appearance: These beetles are flattened, red-brown, and about 1/10-inch long. The common name comes from the six sawtooth-like projections on each side of the thorax. The sawtoothed grain beetle has exposed eyes and the head is triangular in shape.
Life Cycle: Eggs are laid singly or in small groups in the food material where the life cycle is completed. The eggs hatch in about one week; the larvae mature within a month; and the pupae mature in two months. Adults emerge in the spring and can live six to ten months.
Where to Collect: The sawtoothed grain beetle can be found in cereal-based products.
Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554