Rice stripe moth - Aglossa dimidiata

Japanese: コメノシマメイガ(米の縞螟蛾) - コメノシマメイガ（英語表記）Aglossa dimidiata

An insect of the Lepidoptera family, Pyralidae (illustration). This brown moth is often found inside houses, and varies in size from 1 to 2.5 cm with its wingspan. Males are generally small and have rather thin wings. The larvae are blackish caterpillars called rice worms that feed on stored grains and other dry foods. They make nests by binding grains and insect droppings together with silk, and live inside them to feed on food. When they become mature, they make rough cocoons similar to the larval nests and pupate. They emerge two to three times a year, and overwinter as larvae. The adults fly near places where grains and dry foods are stored, such as warehouses and kitchens, and will sneak into even the smallest gaps to lay eggs.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目メイガ科の昆虫（イラスト）。家屋内でよく見られる茶褐色のガで，大きさは開帳1～2.5cmと変異があり，一般に雄は小型で翅がやや細い。幼虫は貯蔵穀物その他乾燥食品につき，黒っぽいイモムシで，コメノクロムシと呼ばれる。穀粒や虫糞を糸でつづって巣をつくり，その中にすんで食品を食害する。老熟すると幼虫の巣と同じような粗い繭をつくって蛹化（ようか）する。年2～3回の発生で，幼虫で越冬。成虫は，倉庫や台所のような穀物や乾燥食品の貯蔵してある場所の付近を飛び，わずかな隙間でも潜って産卵する。

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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