Well I've been studying for a few years and it surprises me that no one ever brought it up. Coronella is a newer discription of a european snakes known as "smooth snakes" that used to be in the same genus as kings and milks.
"Taxonomy
Coronella is closely related to the American kingsnakes (Lampropeltis) and both groups were once classified within the same genus"
Some pics:





Should more studying be done to see if this is truly the european kingsnake? What are your thoughts?
http://en.wikipedia.org/wiki/Coronella



