Household Casebearer (Plaster Bagworm)

Found indoors in houses or other buildings, especially in humid or tropical climates; often seen on walls, ceilings, and under furniture.

Larvae feed on spider webs, wool, hair, and biological debris such as dead insects and lint.

The larva constructs a protective silk case covered in sand, dust, and lint. It can turn around inside the case to protrude its head from either end for mobility and feeding.

Generally harmless to humans and pets, but can be a minor household pest if they damage wool clothing or silks. They play a small role in cleaning up organic debris and spider webs.