Bug Identifier
Household Casebearer
Community identification

Household Casebearer

Phereoeca uterella

Order & Family
Lepidoptera: Tineidae
Size
Case length is typically 8-13 mm; the caterpillar inside is smaller.
See this bug in the Encyclopedia

Natural Habitat

Indoor environments, particularly in humid climates, often found on walls, under furniture, or in closets.

Diet & Feeding

Larvae feed on natural fibers like wool, spider webs, hair, and organic debris.

Behavior Patterns

The larva constructs a protective silk case covered in sand, dust, and debris. This case is open at both ends, allowing the larva to feed from either side and move by dragging the case along.

Risks & Benefits

They are considered minor household pests as they can damage natural fabrics and silk. They pose no direct health risk to humans or pets but are an indicator of high humidity and presence of organic dust.