Final answer:
Moths and beetles are the two groups of insects that feed on stored woolens, furs, and feathers.
Step-by-step explanation:
The two groups of insects that feed on stored woolens, furs, and feathers are moths and beetles. These insects are known as fabric pests because they can cause damage to natural materials like wool, fur, and feathers.
Moths and beetles lay their eggs on these materials, and the larvae feed on them, causing holes and damage.