Household Casebearer
Scientific Name: Phereoeca utereIla
Order & Family: Lepidoptera: Tineidae
Size: 8 to 13 mm (larval case)

Natural Habitat
Found indoors attached to walls, under furniture, and in corners; typically prefers warm, humid environments.
Diet & Feeding
Larvae feed on spider webs, woollen fabrics, hair, and organic detritus.
Behavior Patterns
The larva constructs a protective silken case covered in sand, dust, and lint, which it carries while moving; it transitions into a pupa within this case before emerging as a small moth.
Risks & Benefits
Primarily a domestic pest that can damage natural fiber clothing or carpets, but generally harmless to humans and pets.
Identified on: 1/7/2026