Webbing Clothes Moth Larva

Natural Habitat

Indoors, particularly in dark, undisturbed areas where animal-based textiles are stored (closets, attics, storage chests). They thrive in high humidity and are often found in woolens, furs, feathers, silk, and sometimes synthetic blends if soiled with human oils or food.

Diet & Feeding

Keratin-containing materials of animal origin, such as wool, fur, hair, feathers, silk, and sometimes leather. They can also feed on soiled cottons and synthetics that contain human or pet dander/oils, or food spills. They do not feed on clean synthetic fibers.

Behavior Patterns

The larvae spin silken tunnels or patches of silk as they feed, often embedding frass (excrement) and textile remnants within. They prefer dark, undisturbed locations and actively avoid light. The larval stage is the damaging stage, as adults do not feed. Larvae can take several weeks to over a year to develop, depending on environmental conditions and food availability. Pupation occurs within a silken cocoon. Adults are weak fliers and often go unnoticed.

Risks & Benefits

Risks: Significant pest of stored textiles, causing damage to clothing, carpets, upholstery, furs, and other keratin-based items. Can lead to considerable financial loss and emotional distress due to damage of sentimental items. They pose no direct health risk to humans (e.g., bites or stings). Benefits: In natural environments, they contribute to the decomposition of animal remains, but this role is typically overshadowed by their pest status in human dwellings.

Identified on: 9/18/2025