| Confused flour beetles (Tribolium confusum Duv. ) are holometabolous insects in the darkling beetle family (Tenebrionidae ) of the order Coleoptera. They resemble saw-toothed grain beetles except that they have no projection (tooth) on either side of the thorax and are thick and stocky. The adult is a small, reddish-brown insect measuring a little over 3 mm (1/8") long. The larva looks like a small, yellowish worm about 6 mm (1/4") long.|| The female lays about 350 eggs and the larvae molt eight times before pupating and finally emerging as adults. The full lifecycle lasts about one month.|
Larvae and adults both cause considerable damage. They also secrete a foul-smelling liquid that gives food a very unpleasant odor. They feed on flour products and are more often found in bakeries than in the home because they mainly attack raw ingredients.
For more information on flour beetles, please read issue 20 and issue 21 of our technical newsletter The Gatekeeper.
Go to top