Household Casebearer

Indoor environments, particularly in humid climates. Often found on walls, under furniture, or near baseboards.

Larvae feed on spider webs, wool, hair, silk, and organic debris.

The larva constructs a protective spindle-shaped case from silk, sand, and dust. It can emerge from either end of the case to feed or move. It undergoes complete metamorphosis, eventually pupating inside the case.

They are considered a minor household pest because they can damage natural fibers like clothes or upholstery. They are harmless to humans and pets, and they actually help clean up spider webs indoors.