Bug Identifier
Household Casebearer (Plaster Bagworm)
Community identification

Household Casebearer (Plaster Bagworm)

Phereoeca uterella

Order & Family
Order Lepidoptera, Family Tineidae
Size
Case is typically 8 mm to 14 mm in length.
See this bug in the Encyclopedia

Natural Habitat

Found inside buildings, particularly on walls in humid, tropical, and subtropical climates.

Diet & Feeding

The larvae feed on spider webs, wool, and human hair, as well as natural fibers like silk.

Behavior Patterns

The larva constructs a protective silk case covered with debris and carries it while crawling. The case is spindle-shaped and open at both ends so the larva can exit from either side to feed.

Risks & Benefits

They are considered a minor household pest because they can damage silks and wool garments. They do not pose a direct health risk to humans or pets.