Household Casebearer
Scientific Name: Phereoeca uterella
Order & Family: Lepidoptera: Tineidae
Size: Case is 8-14 mm in length; larva is smaller and resides inside.
Natural Habitat
Found inside homes and buildings, typically on walls, floors, and under furniture.
Diet & Feeding
Larvae feed on organic fibers including wool, silk, hair, and spider webs.
Behavior Patterns
The larva constructs a protective silk case covered in dust and sand. It is mobile, dragging its case as it moves, often climbing walls to pupate near the ceiling.
Risks & Benefits
Harmless to humans personally, but a household pest that can damage clothing, rugs, and natural fiber materials.
Identified on: 1/2/2026