Sometimes Insects that infest food, such as carpet beetles, enter homes through natural migrations. More often, Insects enter homes on food already infested during storage or transportation. Never apply insecticides in a manner that allows contact with food, food utensils or food preparation areas. Small pieces of cracked grains also may be sources of flour beetle infestation. Both species of flour beetles have wings but rarely fly.
Immature stages are pale-colored and wormlike.
On close inspection, a pair of pointed forks can be seen on the hind body segment. Development of the immature stage typically takes one to two months and adults lay eggs over a period of five to eight months. Both adult and immature stages feed on flour. Sawtoothed grain beetle. It can develop in flour, but most infestations occur in processed grain products such as breakfast cereals, oatmeal, corn meal and pasta.