caseworm

English Thesaurus

1. insect larva that constructs a protective case around its body (noun.animal)

hypernym	:	larva,
definition	:	the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose (noun.animal)

hyponym	:	caddisworm, strawworm,
definition	:	larva of the caddis fly; constructs a case of silk covered with sand or plant debris (noun.animal)