Male dragonflies grab females by the head, using special appendages at the end of the abdomen. If the fit isn’t quite right, the female will not cooperate in the aerial mating, and the male will soon let go. In a sense, the female dragonfly is choosing a mate by this act of noncooperation. Females may also “choose†which packets of sperm fertilize their eggs.
en.wikipedia.org/wiki/Dragon_fly
NSFW?
Have you never seen 2 dragonflies on top of each other while they fly around? The thought never cross your mind what they may be doing?
I don’t understand.