One-big-eared moth - One-big-eared moth

Japanese: イッテンオオメイガ - いってんおおめいが
One-big-eared moth - One-big-eared moth

A moth belonging to the order Lepidoptera and the family Pyralidae. It is found in Japan, Taiwan, and China, as well as Malaysia, India, and Afghanistan, and is a major pest of rice cultivation in tropical and subtropical regions. It is also called the Sanka Borer Moth or Sanka Meichu (three-formed burrowing moth) because it occurs three times a year (twice in some areas). Its wingspan is 20-25 mm. Males have straw-colored forewings with small black spots and diagonal lines. Females have cream-colored forewings with larger black spots than males. The larvae feed on the stalks of rice and upland rice, causing great damage. They spend the winter in the stubble as mature larvae. The lowest temperatures occur south of -3.5°C, so in Japan they occur in the southwestern part of Honshu, Shikoku, Kyushu, and islands south of those.

[Hiroshi Inoue]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

昆虫綱鱗翅(りんし)目メイガ科に属するガ。日本、台湾、中国からマレーシア、インド、アフガニスタンにかけて分布し、熱帯や亜熱帯地域における稲作の大害虫である。年3回(一部の地方では2回)発生するので、サンカメイガ(三化螟蛾)あるいはサンカメイチュウ(三化螟虫)ともよばれている。はねの開張20~25ミリメートル。雄は前翅が藁(わら)色で、小黒点と斜線がある。雌は前翅がクリーム色で、黒点は雄より大きい。幼虫はイネや陸稲の茎に食入し、大きな被害を与える。冬は刈り株の中で老熟幼虫態で過ごす。気温の低極が零下3.5℃以南に分布するので、日本では本州の南西部、四国、九州およびそれより南の島々で発生する。

[井上 寛]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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