Household Casebearer moth larva

Natural Habitat

Typically found inside residential buildings, particularly in humid climates, on walls and ceilings.

Diet & Feeding

Feeds on spider webs and natural fibers such as wool, hair, and silk.

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 turn around inside and emerge from either side to feed.

Risks & Benefits

They are considered minor household pests because they can damage silk or wool textiles, but they pose no direct health risk to humans.

Identified on: 12/31/2025