Household Casebearer
Scientific Name: Phereoeca utericella
Order & Family: Order: Lepidoptera, Family: Tineidae
Size: Case length is about 8-14 mm (0.3-0.5 inches).

Natural Habitat
Typically found inside houses, on walls, or under furniture in warm, humid climates.
Diet & Feeding
Larvae feed on spider webs, wool, silk, hair, and other natural fibers or organic debris.
Behavior Patterns
The larva constructs a protective silken case covered in sand or debris and carries it while moving. It can extend its head from either end to feed or move. After feeding, it attaches to a surface to pupate.
Risks & Benefits
They are considered a minor household pest as they can damage natural fiber clothing or carpets. They do not pose a direct health risk to humans or pets.
Identified on: 12/28/2025