Which two groups of insects commonly feed on stored woolens, furs, and feathers?

Clothes moths and carpet beetles are the two groups of insects most commonly associated with feeding on stored woolens, furs, and feathers. Clothes moths, particularly the larvae, are well-known for targeting natural fibers such as wool, silk, and other animal-based materials. They can cause significant damage to clothing and textiles when left undisturbed in storage.

Carpet beetles, especially their larvae, also have a penchant for these materials. While they may not be as directly associated with clothing as clothes moths, carpet beetle larvae can feed on a variety of organic fibers, which includes wool and other animal products. Their feeding behavior can lead to similar damage to textiles and household items.

In contrast, other groups listed, such as termites, primarily feed on cellulose found in wood and plant materials; they do not target animal fibers. Silverfish are known for consuming paper, adhesives, and starch-based products but are not significant pests of woolens, furs, or feathers. Webbing moths and fabric weevils have specific behaviors suited to different materials, which makes them less common culprits for insect damage to stored animal fibers than clothes moths and carpet beetles.