Black Carpet Beetle

Scientific Name: Attagenus unicolor

Order & Family: Coleoptera: Dermestidae

Size: Adults are typically 2.8 to 5 mm long.

Black Carpet Beetle

Natural Habitat

Commonly found indoors in homes, warehouses, and museums. Adults are often found near windows as they are attracted to light, while larvae reside in dark, undisturbed areas like closets, under carpets, in air ducts, and near sources of food.

Diet & Feeding

The larvae are the damaging stage and feed on natural fibers of animal origin, such as wool, fur, silk, feathers, and leather. They also consume hair, dead insects, and stored food products like cereals, spices, and pet food. Adults primarily feed on pollen and nectar from flowers.

Behavior Patterns

Adult beetles are active fliers and are drawn to light sources. After mating, females search for suitable locations to lay eggs, typically on or near larval food sources. The life cycle can take from several months to a year, with the larval stage being the longest. Larvae avoid light and will molt several times before pupating.

Risks & Benefits

Risks: The primary risk is from the larvae, which can cause significant damage to clothing, carpets, upholstery, and other household items made of natural fibers. The bristly hairs (setae) of the larvae can also cause skin irritation or allergic reactions in some people (carpet beetle dermatitis). Benefits: In nature, they play a beneficial role as decomposers, helping to break down dead insects and animal carcasses.

Identified on: 11/7/2025