Household Casebearer moth larva
Scientific Name: Phereoeca uterella
Order & Family: Lepidoptera: Tineidae
Size: 8 to 13 mm (for the silk case)
Natural Habitat
Commonly found inside homes in humid climates, often on walls or in corners
Diet & Feeding
The larva feeds on spider webs and natural fibers like wool and hair
Behavior Patterns
The larva builds a protective silk case covered in sand, dust, and debris. It can pull its head and legs into either end of the case to hide or move.
Risks & Benefits
They are considered minor household pests because they can damage silk or wool fabrics, but they do not pose any health risks to humans.
Identified on: 2/24/2026