Which is true regarding webbing clothes moth larvae?

Webbing clothes moth larvae are known for their preference for soiled materials, specifically items that contain organic matter such as sweat, body oils, food remnants, and other forms of contamination. These larvae thrive on materials that are rich in keratin, which is found in natural fibers such as wool, silk, feathers, and fur. The presence of dirt or stains makes these materials more appealing to the larvae, as the organic matter provides them with the nutrients they need to grow and develop.

While some moth larvae may create case-like structures using silk, webbing clothes moth larvae do not form such cases; instead, they are characterized by their silk webbing that can be found on and around infested materials. Additionally, they are not particular about cleanliness and indeed prefer dark, undisturbed areas where soiled materials may accumulate, contradicting any notion that they thrive in clean environments. Therefore, their feeding habits are closely tied to the presence of soiled textiles and materials.