Household Case-bearing Clothes Moth (Larva)
Scientific Name: Phereoeca uterella
Order & Family: Order: Lepidoptera; Family: Tineidae
Size: Case typically measures 8mm to 12mm in length; larvae inside are smaller.

Natural Habitat
Indoors in homes or buildings, particularly favoring humid areas and the crevices of walls, floors, or furniture.
Diet & Feeding
Larvae feed on natural fibers such as wool, silk, hair, felt, and spider webs, as well as organic detritus and dust.
Behavior Patterns
The larva constructs a protective silk case covered in sand, dust, and debris. It stays inside the case, extending its head and legs to crawl or feed, and can retreat inside if threatened.
Risks & Benefits
Possesses a risk as a household pest that can damage clothing, carpets, and upholstery made of organic materials; does not pose a direct health risk to humans.
Identified on: 4/19/2026