Household Casebearer

Indoor environments, particularly on walls in humid houses, garages, and sheds.

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

The larva builds a flattened, watermelon-seed-shaped silk case covered in sand or dust. It can emerge from either end of the case to crawl or feed.

Considered a minor household pest; can occasionally damage fabrics made of natural fibers but is generally harmless to humans.