The red flour beetle attacks stored grain and other food products including flour, cereals, pasta, biscuits, beans, and nuts, causing loss and damage. Although small beetles, about 1/8 of an inch long, the adults are long-lived and may live for more than three years. The red flour beetle is reddish-brown in color and its antennae end in a three-segmented club. Whereas the confused flour beetle is the same color but its antennae end is gradually club-like, the "club" consisting of four segments.
Rust red flour beetleTribolium castaneum