For the first time water dipping behaviour of Calopteryx during threatening flight is reported. Four males of Calopteryx virgo in a small rivulet coming from a spring pool in SW France involved in threatening flights near an opponent dipped a wing into the water, producing conspicuous water rings. One male did this twice and additionally hit the water with its legs, splashing water drops forward. Possible interpretations are discussed.

中文翻译：

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Calopteryx virgo L.（昆虫纲：Odonata）的雄性在威胁展示中接触水

首次报道了 Calopteryx 在威胁飞行期间的浸水行为。来自法国西南部一个泉水池的一条小溪流中的四只雄性 Calopteryx virgo 参与了靠近对手的威胁飞行，将机翼浸入水中，产生了明显的水环。一只雄性做了两次，还用腿撞击水面，向前溅起水滴。讨论了可能的解释。