Praying mantis has pulsating butt almost lol it's taking deep breaths and black coming out of its butt as well also hangs from just its arms with its legs dangling
I was hoping for a better outcome, sorry to hear that.
It was definitely a victim of a parasitic host, which is usually quite uncommon even in a wild mantid (at least I've never come across one in the nearly 200 wild mantids I've collected). I hope you froze the maggot larvae, or at least squished them, as there is no need to spread such creatures.
I doubt the next mantid you find will have such a problem, best of luck (and sorry to see that was your introduction to the hobby or at least the forum - hopefully your next will be better).
So sorry to hear! I had read that there are some parasites out there that they get from certain types of foods... I hope you never have to deal with it again!!