Community identification
Household Casebearer
Phereoeca uterella
- Order & Family
- Lepidoptera: Tineidae
- Size
- Case length is typically 8-14 mm; the larva inside is smaller.
Natural Habitat
Indoor environments, particularly on walls in humid houses, garages, and under furniture.
Diet & Feeding
Larvae feed on spider webs, wool, hair, silk, and organic debris found in household dust.
Behavior Patterns
The larva builds a flattened, spindle-shaped silken case covered in sand, dust, and fibers. It can poke its head out of either end of the case to move or feed.
Risks & Benefits
They are considered minor household pests because they can damage silk or wool fabrics and spider webs, but they pose no health risk to humans.