I obtained a large black scorp at a small pet store about a year ago. He was sold as a "Chinese Forest Scorpion" which I figured meant Heterometrus spinifer, but he's gotten a little bigger and I'm starting to suspect he might just be an emperor. Mainly the claws, most Heterometrus sp. seem to have smoother and smaller claws than pandinus, also, he's got the trademark pandinus yellowish telson. Anyone got any foolproof ways of telling these two simmilar species apart?