Case-bearing clothes moth (likely larval cases and frass)
Tinea pellionella
- Order & Family
- Lepidoptera; family Tineidae
- Size
- Adults are about 6–9 mm long with a 9–16 mm wingspan; portable larval cases are typically 6–10 mm long.
Natural Habitat
Dark, undisturbed indoor areas such as closets, carpets, upholstered furniture, and stored textiles. Larvae favor humid places and animal-based fibers.
Diet & Feeding
Larvae consume keratin-containing materials, including wool, fur, feathers, hair, and sometimes silk. Adults do not feed and are focused on reproduction.
Behavior Patterns
Larvae live inside silk-covered cases, feeding discreetly and leaving holes, webbing, and granular droppings; they avoid light. Adults are small, weak-flying moths, and development may take several months indoors.
Risks & Benefits
They can damage clothing, carpets, taxidermy, and other animal-fiber materials but do not bite or transmit disease. Removing infested textiles, thorough vacuuming, laundering or heat treatment, and humidity control are effective.