Red Flour Beetle


Native to the Indo-Australian region, but now found as a pest of food products throughout the world.


Very similar in appearance, biology, and habits to the Confused Flour Beetle, the Red flour beetle is a scavenger that feeds on virtually any vegetable-based food products, but it is unable to feed on whole, undamaged grains. It may occur in conjunction with the weevils that bore into grains, feeding on the grain once it is opened by the weevil. When present in great numbers they cause flour products to turn gray and distasteful and to mold more quickly. Flour and meal products are especially prone to infestation by the flour beetles in general. Adult beetles may live more than 3 years, laying around 350 eggs in that time. The development of the larva may take from 22 to 100 days, depending on conditions in the habitat, and it may molt up to 18 times in its growth.


Characteristics Important in Control:

Control of most stored food pest beetles relies on a combination of proper storage of products in cool, dry conditions and if possible in pest-proof containers, sanitation measures to remove or prevent spilled materials and dust accumulations, and monitoring with pheromone traps to determine when adult insect activity may begin in an account or to pinpoint the location of the infestation within a structure. Fumigation with either methyl bromide or aluminum phosphide will kill all stages of the beetles present in food, and ensure food products are pest-free as they go into storage.