I have a peruvian, a giant african and a vietnamese millipede. theyve been doing fine, up until the last week, my peruvian wont uncurl all the way, his head is tucked and and he writhes as is he is in pain. there is a small white knot below his head where he is tucked, is this some sort of parasite?? Ive noticed a sudden increase in WHITE parasites-- theirs have always been black and and not such great numbers. anybody know? I dont want my mills to die!! thanks, Debra