Plaster Bagworm

Typically found inside buildings, especially on walls or floors in humid climates.

Larvae feed on spider webs, wool, human hair, fur, and silk.

The larva builds a flattened, spindle-shaped case from silk and debris (like sand or lint) and carries it while moving; it can emerge from either end of the case.

Considered a household pest as they can damage natural fiber fabrics or carpets, though they pose no direct health risk to humans.