Bug Identifier
Household Casebearer (Larva/Plaster Bagworm)
Community identification

Household Casebearer (Larva/Plaster Bagworm)

Phereoeca uterella

Order & Family
Order: Lepidoptera; Family: Tineidae
Size
8 to 14 mm (case length)
See this bug in the Encyclopedia

Natural Habitat

Typically found inside houses, particularly on walls and floors in humid areas. They are common in tropical and subtropical regions.

Diet & Feeding

The larvae feed on organic materials including spider webs, wool, human hair, and silk from other insects.

Behavior Patterns

The larva constructs a protective silk case covered in sand, dust, and debris. It is open at both ends, allowing the larva to turn around and emerge from either side to travel or feed. They eventually pupate inside this case.

Risks & Benefits

They are considered a minor household pest. While they do not bite or transmit disease, high populations can damage natural fibers like clothing or upholstery and create unsightly silk cases on walls.