Brown-marmorated stinkbug (Halyomorpha nalys)

Japanese: クサギカメムシ（英語表記）Halyomorpha nalys; brown-marmorated stinkbug

Hemiptera, Heteroptera, Heteroptera, Hemiptera. It is named after the stink bug that feeds on Japanese laurels. In mountainous areas, they invade homes in large numbers in the fall and hibernate in attics. During this time, they leave the house when the heating is turned on, and if they are crushed, they spread a bad smell, making them a so-called nuisance pest. Body length is about 16 mm. The body is dark brown with irregular yellowish brown dots. The ventral surface is reddish brown. They live on many fruit trees, including cherry, plum, and peach, as well as Japanese laurel and mulberry, and are known as fruit pests because they suck young fruit, causing them to drop or become deformed. They are distributed in Honshu, Shikoku, Kyushu, the Ryukyu Islands, the Korean Peninsula, and China.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

半翅目異翅亜目カメムシ科。クサギにつくカメムシというのでこの名がある。山間部で秋口に人家内に多数が侵入し，屋根裏などで越冬する。この間暖房が入ると室内を出歩き，これを踏みつぶしたりすると臭気が広がるので，いわゆる不快害虫の1つになっている。体長 16mm内外。体は暗褐色で，黄褐色の不規則な点紋をもつ。腹面は赤褐色である。サクラ，ウメ，モモなどの果樹や，コクサギ，クワなど多くの樹木上で生活し，若い果実を吸って落果させたり，変形させるので果樹害虫としても知られる。本州，四国，九州，琉球列島，朝鮮半島，中国に分布する。

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