Household Casebearer (often the larva of the Plaster Bagworm or similar clothes moth)
Scientific Name: Phereoeca uterella (or Tinea pellionella for Case-bearing Clothes Moths)
Order & Family: Lepidoptera: Tineidae
Size: Larval case is typically 8-13 mm long.
Natural Habitat
Found indoors in homes, particularly in humid climates; often seen on walls, baseboards, carpets, and in closets.
Diet & Feeding
Feeds on natural fibers like wool and silk, spider webs, dead insects, lint, and sometimes dried food products.
Behavior Patterns
The larva constructs a flattened, pumpkin-seed-shaped protective case out of silk and debris (sand, dust, fibers) which it carries around. It emerges from either end to feed or move.
Risks & Benefits
Risks: Can be a household pest that damages woolen clothing, rugs, and upholstery. Benefits: None significant to humans, though they do help decompose minor organic debris.
Identified on: 3/2/2026