Plaster bagworm

Found inside residential homes and buildings, typically on walls, tiles, or ceilings in humid environments.

The larvae feed on spider webs, wool, human hair, shed skin, and silk fibers.

The larva constructs a protective silk case covered in sand, dust, and lint. It can drag this case along walls and can emerge from either end to feed.

They are considered household pests because they can damage natural fiber fabrics and carpets. They do not bite or sting humans and pose no direct health risk.