The Mediterranean Flour Moth (Ephestia kuehniella) is one of the most economically significant stored-product moths worldwide and a serious pest of flour mills, commercial bakeries, and food processing facilities. It is also a common household pantry pest in Arizona, particularly in homes that purchase bulk grain products or store large quantities of flour. Adults are slightly larger than the Indianmeal Moth, with a wingspan of about 3/4 inch. The forewings are pale gray with a distinctive zigzag or wavy dark banding pattern — quite different from the two-toned Indianmeal Moth. The hindwings are pale whitish-gray. Adults are nocturnal and are attracted to light. Larvae are pinkish-white to grayish-white caterpillars that feed primarily on flour, wheat bran, semolina, cornmeal, and other milled grain products. A distinguishing characteristic is the dense, heavy webbing the larvae produce — far more than the Indianmeal Moth — which can completely mat flour into solid clumps and clog machinery in commercial settings. In homes, this webbing is the primary sign of infestation. The Mediterranean Flour Moth prefers cooler temperatures than the Indianmeal Moth and is more commonly found in commercial settings, but it is a significant household pest when introduced through infested flour or grain products.