Household Casebearer (Plaster Bagworm)

Indoors in humid environments, often found on walls, under furniture, or near floorboards and closets.

Larvae feed on spider webs, wool, human hair, fur, and silk found in household dust.

The larva constructs a protective silk case flattened and shaped like a pumpkin seed, covered in sand, dust, and lint. It can move by poking its head out of either end of the case.

They are a household nuisance and can occasionally damage natural fiber clothing or carpets, but they possess no health risks to humans or pets.