The confused flour beetle, Tribolium confusum Jacquelin du Val, is a common insect that attacks stored grains and foods in the pantry. This insect has a world wide distribution and is very abundant in the United States. It generally feeds on finely ground or broken starch materials, such as flour or meal. Adults and larvae feed on broken kernels and fine-grind materials in granaries, mills, warehouses, and other places where grain or grain products are stored. A closely related species, the red flour beetle, Tribolium castaneum (Herbst), is often found associated with the confused flour beetle. These two species are difficult to distinguish, particularly in the larval stage of development.