Geometrid moth - Geometrid moth

Japanese: シャクガ(尺蛾) - シャクガ

A general term for insects in the Geometridae family of the Lepidoptera order. The family with the second largest number of species after the Noctuidae, with nearly 800 known species in Japan alone, including the mulberry geometridae (illustration), mugwort geometridae, dragonfly geometridae (illustration), and yellow spotted geometridae (illustration), and tens of thousands of species have been registered worldwide. The larvae are called inchworms (measuring worms). Generally, Lepidoptera larvae (caterpillars, hairy caterpillars) have five pairs of abdominal legs, but the Geometridae family only have the sixth and tenth abdominal legs (tail legs), and therefore walk in a unique way.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目シャクガ科Geometridaeの昆虫の総称。鱗翅目の中では，ヤガ科に次いで種数の多い科で，日本だけでもクワエダシャク（イラスト），ヨモギエダシャク，トンボエダシャク（イラスト），ユウマダラエダシャク（イラスト）など800近くの既知種があり，世界では何万種も登録されている。幼虫はシャクトリムシ(英名inchworm∥measuring worm)と呼ばれる。一般に鱗翅目の幼虫(芋虫，毛虫)は，5対の腹脚をもつが，シャクガ科では第6と第10腹脚(尾脚)しかないため，特異な歩き方をする。

出典　株式会社平凡社世界大百科事典第２版について　情報

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