Carpet Beetle (larvae or frass)
Anthrenus (larvae) or Trogoderma (larvae)
- Order & Family
- Coleoptera, Dermestidae
- Size
- Larvae typically 2-5 mm in length; adults are usually 2-4 mm.
Natural Habitat
Indoors, especially in undisturbed areas, under furniture, in carpets, rugs, upholstered furniture, clothing, and stored food products.
Diet & Feeding
Larvae feed on a variety of organic materials, including wool, silk, feathers, fur, pet hair, dead insects, stored dry food products, and even synthetic fabrics if soiled. Adults typically feed on pollen and nectar outdoors.
Behavior Patterns
The image shows small, possibly fuzzy or bristly specks on a black fabric. These could be carpet beetle larvae, which are known for their hairy appearance and preference for dark, undisturbed areas. Alternatively, it could be frass (excrement) or shed skins from carpet beetle larvae. They are slow-moving and often go unnoticed until an infestation is significant. They undergo complete metamorphosis.
Risks & Benefits
Potential risks include damage to fabrics, carpets, clothing, and museum specimens made of natural fibers. They are not known to bite humans or transmit diseases. There are generally no benefits associated with indoor carpet beetle infestations.