Household Casebearer or Plaster Bagworm

Typically found indoors in warm, humid structures. They attach to walls, ceilings, baseboards, and under furniture.

Detritivores that feed on spider webs, old silk, woolen fibers, human hair, lint, and dead insects.

The larva constructs a distinctive flattened, pumpkin-seed-shaped case out of silk, sand, and debris which it carries around. It can retract fully into the shell when threatened. They eventually pupate inside this case.

Risks: Generally harmless to humans but can be considered a household pest requiring removal if numbers are high. They may damage fabrics like wool or silk. Benefits: They consume household debris like cobwebs and old insect skins/parts.