eli5- Why do insects and arachnids like a praying mantis and spiders kill the one they mate with?

Question

eli5- Why do insects and arachnids like a praying mantis and spiders kill the one they mate with?

In: 499

Answer 1

This is a behavior only seen in captivity, in the wild, The male just leaves afterwards. It’s a solo creature defending territory, not a sexually motivated killing