Household Casebearer

Scientific Name: Phereoeca uterella

Order & Family: Lepidoptera: Tineidae

Size: Case length typically 8-13 mm; the larva inside is smaller.

Household Casebearer

Natural Habitat

Found inside houses, particularly in areas with high humidity, on walls, and under furniture.

Diet & Feeding

Larvae feed on spider webs, wool, silk, hair, and other organic debris in the home.

Behavior Patterns

The larva constructs a protective silk case flattened like a pumpkin seed, incorporating dust and sand for camouflage. It remains inside the case, extending its head to move and feed.

Risks & Benefits

Harmless to humans but can be a minor pest by damaging delicate natural fabrics or creating unsightly cases on walls.

Identified on: 1/8/2026