Household Casebearer (Plaster Bagworm)

Typically found inside residential buildings on walls or floors, often in humid or damp areas like bathrooms and closets.

The larvae feed on organic materials, including spider webs, wool fibers, hair, and sometimes dead insects.

The larva constructs a protective silk case covered in sand, dust, and debris. It is open at both ends, allowing the larva to feed from either side and retreat inside if threatened. They undergo a complete metamorphosis including larva, pupa, and adult moth stages.

Generally harmless to humans and pets, but can be a nuisance pest. In large numbers, they may cause minor damage to natural fiber textiles (wool, silk) or clothing, but they are primarily web-scavengers.