Plaster Bagworm (Household Casebearer)

Commonly found inside homes on walls, under furniture, or near baseboards where dust and debris accumulate.

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

The larva builds a protective silken case covered in sand, debris, and fibers. It can extend its head from either end of the case to feed or move. When mature, it attaches the case to a vertical surface to pupate.

They are considered minor household pests because they can damage natural fiber fabrics and silks, though they primarily feed on spider webs and dust. They pose no direct health risk to humans or pets.