We don't have synonyms for caddice yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are caddie, candice and addice.
(n) :
Alternative form of caddis (“larva”). [The larva of a caddis fly. They generally live in cylindrical cases, open at each end, and covered externally with debris.]
(n) :
Alternative form of caddis (“rough woolen cloth”). [The larva of a caddis fly. They generally live in cylindrical cases, open at each end, and covered externally with debris.]
(n) :
Alternative form of caddis (“larva”). [The larva of a caddis fly. They generally live in cylindrical cases, open at each end, and covered externally with debris.]
(n) :
Alternative form of caddis (“rough woolen cloth”). [The larva of a caddis fly. They generally live in cylindrical cases, open at each end, and covered externally with debris.]