Swift moth (bat moth)

Japanese: コウモリガ(蝙蝠蛾) - コウモリガ（英語表記）swift moth

A general term for insects belonging to the Hepialidae family of Lepidoptera. Primitive moths of medium to large size with similar size and shape of the forewings and hindwings, with approximately 12 wing veins. In the past, families with this type of venation were classified as the Homoptera suborder of Lepidoptera, but in recent classifications, the Hepialidae family, which do not have a well-developed mandible, are classified as the Exoporia suborder. The antennae are very short and the mouthparts are very small. The larvae dig tunnels into the stems of plants and trunks and branches of trees to feed, and the feeding opening is laced with silk-like feces, making it easy to identify damaged trees.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目コウモリガ科Hepialidaeに属する昆虫の総称。中型から大型の原始的なガで，前･後翅の大きさや形が似ていて，翅脈数がほぼ12本ある。昔はこのような脈相の科を鱗翅目の中の同翅亜目としていたが，最近の分類では，この群の中で小腮鬚（しようさいしゆ）の発達していないコウモリガ科をコウモリガ亜目Exoporiaとして区別している。触角は非常に短く，口器はごく小さい。幼虫は草木の茎，樹木の幹や枝にトンネルを掘って食入し，食入口には糞を糸でつづるので，被害を受けた木を見分けることができる。

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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