Mulberry moth - Mulberry moth

Japanese: クワノメイガ - くわのめいが

A pest insect of the Lepidoptera family, Pyralidae, whose larvae parasitize mulberry trees. It is commonly known as the mulberry nest bug. Although it varies depending on the region, it appears about four times a year, overwintering as larvae on tree trunks or among fallen leaves. It pupates the following spring, and the first generation of adults emerges in late spring. The descendants of these adults live inside new leaves that are stitched together or folded up, eating one side of the leaves, making them translucent. The second generation of adults emerges in early summer, and their descendants feed on mulberry leaves in summer.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目メイガ科の昆虫で，幼虫がクワに寄生する害虫。俗にクワノスムシ(桑の巣虫)と呼ばれている。地方によって異なるが，年に4回くらい発生し，幼虫の状態で樹幹や落葉の間などで冬を越す。翌春蛹化（ようか）し，第1回目の成虫は晩春に羽化する。この成虫の子孫は新葉をつづり合わせたり，若葉を折り曲げてその中にすみ，葉の片側を食べるので葉は半透明となる。第2回目の成虫は夏の初めころに羽化し，その子孫は夏にクワの葉を食べる。

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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