This study has been carried out to identify larvae and to acquire useful biological information of insect larvae through rearing from 1997 to 2016 in HECRI(Holoce Ecosystem Conservation Research Institution). Total 148 species belonging to 16 families were collected and 45 species belonging to 12 families identified. Among identified species monophagous caterpillars dependent on maple tree were 16 species belonging to 6 families, polyphagous 29 species belonging to 9 families. The dominant family is Geometridae(50 species), second is Noctuidae(26 species) and followed by Tortricidae(18 species).