A general term for insects in the Coccinellidae family of the Coccinellidae order, or one of these species. The ladybird beetle Harmonia axyridis (illustration) is a species commonly found throughout Japan and is also known as the two-spotted ladybird. It is 7 to 8 mm long. It is also found in Siberia, China, Taiwan, etc. The markings on the elytra vary widely, but are divided into individuals with a red background (ben type), individuals with multiple red markings on a black background (marked type), individuals with four red markings on a black background (four-marked type), and individuals with two red markings on a black background (two-marked type). Adults are active from spring to autumn, but their numbers decrease from late July to early September. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
甲虫目テントウムシ科の昆虫の総称,またはそのうちの1種を指す。テントウムシHarmonia axyridis(イラスト)は日本各地にふつうに見られる種類でナミテントウとも呼ばれる。体長7~8mm。シベリア,中国,台湾などにも分布する。上翅の斑紋は変化に富むが,地色が赤色の個体(紅型),黒地に赤色多紋の個体(斑型),黒地に赤色4紋の個体(四紋型),黒地に赤色2紋の個体(二紋型)に分けられる。成虫は春から秋まで活動するが,7月下旬から9月上旬にはその数が減る。
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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