Household Casebearer (Plaster Bagworm)

Typically found indoors in humid climates, often on walls, under furniture, or in corners where dust and debris accumulate.

Feeds on wool, hair, spider silk, old spider webs, and dried insect remains.

The larva constructs a protective case out of silk, sand, and debris which it drags around while feeding. The case is shaped like a pumpkin seed or a flat spindle, with openings at both ends to allow the larva to turn around inside.

They do not bite or sting humans. They are considered a minor household pest because they can damage woolen fabrics and rugs, though they primarily feed on cobwebs and debris.