Brown tussock moth (Euproctis pseudoconspersa)

Japanese: チャドクガ(茶毒蛾) - チャドクガ（英語表記）Euproctis pseudoconspersa

An insect of the Lepidoptera family, Lymantriidae (illustration). Wings span 2-3cm. Both sexes have feathery antennae. The wings are orange-yellow, with one or two black markings above the outer edge of the forewing, and a pale-colored thin band about 1/3 and 2/3 of the way from the base. Adults emerge twice a year, in July and October, and often fly to lights. The first generation of males often have black-brown wings and parts of the body other than the head, and the females are larger and paler than the males. They are found in Honshu, Shikoku, Kyushu, the Korean Peninsula, and China. The larvae are well known as pests of tea, and also eat the leaves of other Theaceae plants, such as camellia and sasanqua.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目ドクガ科の昆虫（イラスト）。翅の開張2～3cm。触角は雌雄とも羽毛状。翅は橙黄色，前翅外縁の上方に1～2個の黒紋があり，基部から約1/3と2/3あたりに淡色の細い帯がある。成虫は7月と10月の2回発生し，よく灯火に飛来する。第1化の雄は，翅の周辺部や頭部以外の部分が黒褐色のことが多く，また雌は雄より大きく淡色である。本州，四国，九州，朝鮮半島，中国に分布する。幼虫はチャの害虫として有名で，ツバキ，サザンカなど他のツバキ科の葉も食べる。

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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