Household Casebearer Moth (larva)
Scientific Name: Phereoeca uterella
Order & Family: Lepidoptera, Tineidae
Size: Larvae can grow up to 10-15 mm (0.4-0.6 inches) in length, while their cases are typically 10-20 mm (0.4-0.8 inches) long.

Natural Habitat
Commonly found in human dwellings, particularly in undisturbed areas like closets, attics, storage rooms, and under furniture. They prefer dark, damp environments.
Diet & Feeding
Larvae are scavengers and feed on a variety of organic materials, including wool, hair, silk, lint, and other detritus. They are known to infest carpets, clothing, and stored natural items.
Behavior Patterns
Larvae construct a case from silk and debris, which they carry around for protection. They develop through several instars within this case before pupating inside it. Adults are typically short-lived and may not feed.
Risks & Benefits
Potential risks include damage to natural fibers (wool, silk, fur) in clothing, carpets, and upholstery. They are considered household pests. There are no notable benefits.
Identified on: 8/26/2025