Larder beetles belong to the Dermestidae family. In their adult form, they are dark brown or black with a yellowish stripe across their back on which there are 6 dark spots. They are about 8 mm long. In the larval stage, they a small brown worm that is slightly hairy and 3 mm to 5 mm long. Their heads have two short club-shaped antennae.
Development and Behaviours
It is in their larval stage that larder beetles cause the most trouble. The larvae, once their development is completed, move about randomly and end up reaching various room of houses through cracks, fissures, and ceiling lights. Larder beetles are often found in newer buildings. Adults, just like their larvae, mainly feed on insects (mainly cluster flies and ladybugs), as well as dead rodents and birds that it finds in attics. They feed on a wide range of food such as rotten food or things stored in walls by a rodent population that has infested your building. Both beetles and rodents are likely to transmit food infections. In addition, the larvae may cause allergies. Finally, these pests can damage furs, mounted animals, insect collections, fabrics, and books, as well as materials that larvae tunnel into to hide.
In order to prevent this problem from occurring in subsequent years, flies and ladybugs, amongst others, must be kept from entering the home to spend the winter there. Pest control treatments could be necessary to control the presence of larder beetles and other pests whose activity had not been detected previously. Make an appointment with one of our V Extermination branch offices right away to get advice from experienced professionals in the field who will be able to advise you about the best treatments on the market for a safe, healthy environment.