Case-bearing Clothes Moth Larva

Natural Habitat

Indoors, particularly in dark, undisturbed areas where animal fibers are stored, such as closets, attics, and storage containers. They are common in homes, museums, and textile warehouses.

Diet & Feeding

Keratin-rich materials of animal origin, including wool, fur, feathers, hair, felt, and silk. They may also feed on soiled fabrics containing food stains or perspiration.

Behavior Patterns

The larva constructs a portable case from silk and fragments of the material it is feeding on, expanding it as it grows. It remains inside this case, only protruding its head and legs to feed and move. The larva is slow-moving and seeks dark, protected environments. Pupation often occurs within this case. Adult moths are poor fliers and tend to run or hop; they are typically attracted to light at night.

Risks & Benefits

Potential risks include significant damage to valuable textiles, clothing, carpets, and upholstered furniture made of natural fibers. They do not bite or transmit diseases to humans. There are no known direct benefits to humans, but as detritivores, they play a minor role in breaking down organic matter in their natural habitat.

Identified on: 9/23/2025