Which materials, rich in protein, are primary natural fibers consumed by the larva of *Endrosis sarcitrella*?

Answer

Wool and silk

The larval stage of the White-shouldered House Moth exhibits a strong preference for textiles derived from animal products. Specifically, wool and silk are highlighted as primary food sources because they are rich in protein, a necessary component for the larva's growth and development into the pupa and adult stages. This preference is shared with other textile pests, and these materials provide readily digestible organic compounds, including keratin.

Which materials, rich in protein, are primary natural fibers consumed by the larva of *Endrosis sarcitrella*?
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