The red flour beetle, T. castaneum (Herbst) is worldwide and most destructive pest of stored products and is cosmopolitan in distribution. It is the most common pest of wheat flour. It also causes serious damage upon dried fruits, pulses and prepared cereal foods, such as cornflake, pasta, biscuit, beans, nuts, etc. It is an often the most common species in the pest complex attacking stored wheat although its pest status is considered to be secondary, requiring prior infestation by an internal feeder, it can readily infest with or other grains damaged in the harvesting operation. Both larvae and adults feed on grain dust and broken grain, but not the undamaged whole grains and spend its entire life cycle outside the grain kernels (Karunakaran et al., 2004). In severe infestation, the flour turn greyish and has a pungent, disagreeable odour- making it unfit for human consumption. This insect causes substantial loss in storage because of its high reproductive potential (Prakash et al.,19