Hey everyone, I was herping in an area that has both of these sirtalis subspecies. How can I tell them apart? The valley gartersnake (fitchi) is said to sometimes have red on the side of the face. I definatly seen this in a few specimens. In others, it was inapparent, and I don't know if it's still fitchi, or parietalis (red sided). Does anyone know of a concrete way to tell them apart with scale counts, stripe location ect.?
Thanks kindly for your help 
Ian


