T.p.rutiloris??!!?? Where did you get this snake from? I can't imagine ANY pet store having Mexican ribbons! Very few if any Thamnophis from Mexico and Central America EVER make there way to the states for sale. If it really is T.p.rutiloris....that's quite a find....but I have my doubts. I do agree that if it has the two parietal spots on the head, it's a T.proximus, but I'm betting it's either a T.p.proximus or T.p.orarius..but like I had said before, it'll take more pics for a good ID.