The Lesser grain borer (Rhyzopertha dominica) is a beetle in the family Bostrichidae. The a-d-u-l-t beetle is dark reddish-brown and about 2.5-3 mm long. The head is concealed beneath the prothorax and is invisible when viewed from above. It is a very destructive and widespread pest of wheat and other stored grains. It bores through grains. It's consider more destructive than Rusty grain beetle and Granary weevil. Being a strong flies they can easily migrate from one grain storage to another.
Lesser Grain Borer - Rhyzopertha dominica