Household Casebearer
Scientific Name: Phereoeca uterella
Order & Family: Order Lepidoptera; Family Tineidae
Size: Case length: 8–14 mm; Larva: up to 10 mm

Natural Habitat
Typically found inside houses, on walls, or under furniture. They prefer humid climates and architectural structures.
Diet & Feeding
Larvae scavenge for organic materials including spider webs, wool, hair, felt, and dead insect remains.
Behavior Patterns
Larvae construct a silk-lined, flattened, spindle-shaped case covered with sand or dust for protection. They can move by protruding their head and front legs from either end of the case.
Risks & Benefits
They are considered a minor domestic pest. Risks include cosmetic damage to natural fabrics and clothing. They do not pose a direct health risk to humans.
Identified on: 1/1/2026