it looks like a skull and cross bones! im sure someone here will know what it is in 2 seconds but i agree i would take it out too: if you want to keep it in case its something beneficial keep it insomething else until someone more experienced chimes in
If that's a hole, and those are big eyes, and antennas, your looking at the face of a mantis, and you pissed it off, sleep with one eye open! It's out to get ya!