A caterpillar or larva that builds and carries a protective case or covering made of silk, leaves, or other materials.
Compound of 'case' and 'worm,' descriptive of insects whose larvae construct portable cases for protection and camouflage.
Caseworms are some of nature's architects—caddisfly larvae build cases from sand grains, pebbles, or plant material, and each species has its own distinctive building style, almost like underwater signature homes.
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