Size 1/10 inch Color Brown to dark brown Behavior One female merchant or sawtoothed grain beetle may produce up to 285 eggs deposited singly or in small batches within the food. Larvae are active crawlers and move about through the food as they feed. They are scavengers and not capable of feeding on whole grains …
Dermestes lardarius Size 1/4 to 1/2 inch Color Dark brown to black with pale, yellow six-spotted band across front half of wing covers. The underside and legs are covered with fine yellow hairs. Behavior The genus name “Dermestes” comes from Greek and means “to devour a skin.” Adult larder beetles are often found outside overwintering …
Ahasverus advena Size 1/10 inch Color Reddish Brown Behavior The biology of the foreign grain beetle is not well known. It breeds quickly, completing its cycle from egg to adult in as little as 30 days. It requires moist conditions and develops only when the relative humidity is above 65%. Huge populations are not uncommon …
Stegobium paniceum Size 1/10 to 1/8 of an inch Color Reddish brown to dark brown Behavior The female drugstore beetle lays up to 75 eggs in her lifetime and may deposit them on more than one food source. Under ideal conditions (85° F and 60-90% relative humidity) the life cycle from egg to adult can …
Carpophilus hemipterus Size 1/8 of an inch Color Brown with yellow spots on wing covers Behavior The dried fruit beetle belongs to the family Nitidulidae, which contains the sap beetle. It is the most important pest species of this group. These beetles are strong fliers and constantly search for ripe or fermenting fruit. More than …
Lasioderma serricorne Size: About 1/10 of an inch Color: Shiny brown Behavior: The female cigarette beetle lays 30-40 eggs over a period of weeks in a stored tobacco or dried food product. The eggs hatch within six to 10 days and the larvae begin crawling throughout the food source while feeding. The larvae prefer the …
Anthrenus spp. Size: Tiny, round beetles with larvae that grow up to 1/4-inch in length; the adults grow to 1/16-inch. Color: While generally tan in color, they are covered by tiny black, brown, and white scales, and have numerous tufts of stiff hairs on the body. Behavior: Fabric pests such as carpet beetles, although not …
