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...It was also said that a dragonfly's wings could cut your hand, and that if you were hit on the forehead by a dragonfly, you would definitely die. In French, dragonflies are called "libellules," a name that was used after Linnaeus gave them the Latin name "libellula" in 1758, and their common name was "demoiselle," meaning "young lady." In English, dragonflies of the Zygoptera class, such as the black-tailed dragonfly and the damselfly, are called "damsel flies."...

*Some of the terminology explanations that mention "libellule" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…またトンボの翅で手が切れるとか，トンボに額を打たれると必ず死ぬとかいわれていた。フランス語ではトンボをlibelluleと呼ぶが，これはリンネが1758年にラテン語でlibellulaと名づけて以降のもので，俗称はdemoiselle(〈お嬢さん〉の意)であった。英語ではオハグロトンボ，イトトンボのような均翅類のものをdamsel flyという。…

※「libellule」について言及している用語解説の一部を掲載しています。

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