large mealworms are not recommended, they have a chemical food additive that keeps them from changing so they grow larger, some think that chemical is bad for gliders, this websites list these as NOT recommended for feeding gliders.
super mealworms - i have feed these to my gliders a few times with no problem, but thinking logically, if the glider chews his food, and spits out parts he doesn't want, how would a WHOLE head end up in the stomach. My gliders chew pretty hard and fast with regular mealworms. but removing the head does remove all questions.