Tsutoga (Bract Moth) - Tsutoga (English spelling) Ancylolomia japonica

Japanese: ツトガ(苞蛾) - ツトガ（英語表記）Ancylolomia japonica

An insect of the family Pyralidae in the order Lepidoptera. Wing span is 2.5-3.5cm. In general, males are smaller than females and have darker wings. The forewings are pale gray-yellow with numerous dark brown lines running along the wing veins, a faint white line under the middle lobe, a white line on the outer edge, and a black spot at the edge of the middle lobe. The hind wings are whitish, but slightly gray-brown. They are found throughout Japan north of Okinawa Island, Taiwan, the Korean peninsula, eastern Siberia, and China. The larvae parasitize turfgrasses, but were once thought to infest rice plants as well. The larvae live in the soil and build stalks out of dung and dead leaves, tying them together with silk, and live and feed in these stalks.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目メイガ科の昆虫。翅の開張2.5～3.5cm。一般に雄は雌より小さく，翅の色が濃い。前翅は薄い灰黄色，翅脈に沿って無数の暗褐色線が走り，中室の下にはぼかしたような白線があり，外縁にも白線があり，中室端に黒点がある。後翅は白っぽいが，やや灰褐色を帯びる。沖縄本島以北の日本全国，台湾，朝鮮半島，シベリア東部，中国に分布する。幼虫はシバ類に寄生するが，昔はイネにもつくとされていた。幼虫は土中に，糞や枯葉のくずを糸でつづってつとをつくり，その中にすんで食害する。

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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