Household Casebearer moth larva

Natural Habitat

Found inside homes and buildings, typically on walls or floors in humid, tropical, and subtropical climates.

Diet & Feeding

Larvae feed on organic fibers including spider webs, wool, carpets, silk, hair, and dust.

Behavior Patterns

Larvae construct a flat, spindle-shaped case out of silk and debris (like sand, hair, and dust). They carry this case as they move and can feed from either end of the case by poking their head out.

Risks & Benefits

Generally harmless to humans. They act as scavengers of household debris, but can occasionally damage clothes or rugs made of natural fibers like wool or silk.

Identified on: 3/13/2026