Household Casebearer (often confused with Plaster Bagworm)

Commonly found indoors on walls, in corners, on wool rugs, in closets, and underneath furniture where dust accumulates. They prefer humid environments.

The larvae feed on keratin found in natural fibers (wool, silk), hair, pet fur, spider webs, and dead insects.

The larva constructs a flattened, pumpkin-seed-shaped case out of silk and debris (sand, dust, fibers) which it drags around as protection. It can poke its head out from either end to move or feed.

Risks: Household pest that can damage clothing, rugs, and upholstery made of natural fibers. Generally harmless to humans health-wise (they do not bite or sting). Benefits: None significant in a household setting, though they clean up small amounts of organic debris.