幼生 (ようせい)larva; larvae

larva; larvaeadjectival nouns or quasi-adjectives (keiyodoshi), nouns which may take the genitive case particle 'no'

幼生, its kanji, and other words that share them.Open this graph

Kanji in 幼生

幼児ようじyoung child; toddler
幼稚園ようちえんkindergarten
乳幼児にゅうようじinfants; babies and very young children
幼少ようしょうinfancy; childhood
幼虫ようちゅうlarva; grub
幼いおさないvery young; little
幼なじみおさななじみchildhood friend; friend from infancy
幼友達おさなともだちchildhood friend
学生がくせいstudent (esp. a university student)
生活せいかつliving; life (one's daily existence)
生産せいさんproduction; manufacture
人生じんせい(human) life (i.e. conception to death)
先生せんせいteacher; instructor
厚生省こうせいしょうMinistry of Health and Welfare (now Ministry of Health, Labour and Welfare)
年生ねんせいpupil in ... year; student in ... year
新生しんせいrebirth; new birth

See how 幼生 connects to the rest of Japanese.