- Sexual cannibalism is definitely not essential for coitus, it does occasionally occur not just on Mantis, but also Spider and flies. The most extreme case is on a fly called Serromyia femorata. It mates by snuggling up to its partner and engaging in what sounds like an exceptionally vigorous french kiss: "At the end of mating," it is said, "the female sucks out the body content of the male through the mouth."
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