Household Casebearer

Scientific Name: Phereoeca utereIla

Order & Family: Lepidoptera: Tineidae

Size: 8 to 13 mm (larval case)

Household Casebearer

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