How do you say larva in Japanese?
— 幼虫


Generic synonyms for larva in Japanese
animal動物 (どうぶつ, dōbutsu)
Specialized synonyms for larva in Japanese
caterpillar毛虫 (けむし, kemushi); 芋虫 (いもむし, imomushi)
tadpoleおたまじゃくし (otamajakushi)