I've been catching a lot of mantises this year. It must have been a good summer for them. This is a male that I picked up that I put with a female I suspected of having not bred yet. After surfing on her for 2 days straight but not mating she finally had enough and pull him forward. She then bit off an arm and then through his torso. It was very vexing because she was clearly full and didn't even bother to eat him.

There's some pretty amazing audio of my friend and I talking in the background but it had to removed.