Ruthveni are still a somewhat controversial taxonamy. At present they look like they may be the mother of all mexicana. I won't get into it too much, but there is some really good reading on Robert Hansen's site www.sierraherps.com. I work with all three known locales of the ruthveni. I have the traditional southwestern Queretaro (Amealco locale) that was first brought into the states in the early 80s by Lloyd Lemke and his group. This is where the albinos and the first aberrant line came from. I still have (in partnership with Aaron Mattson) the original w/c male that is responsible for all the aberrant/striped ruthveni you see in the hobby today. I also work with a group of ruthveni that were once thought to be "Smithi". They are from the Jalapan area of eastern Queretaro and were brought into the states in the mid 80s by a group from the Dallas zoo. I refer to them as Jalapan Milks and I have some f1s that are pure ruthveni and haven't been crossed with mex mex as some of them have. The third locale of ruthveni I Work with is from the most western part of there range. They are from Rancho San Francisco near Tapalpa Jalisico. This group was also brought into the country in the late 80s and they were bred and sold as "Jalisico Milks" for many many years. I have also produced some very unique interesting striped/reverse striped animals from this group. I have and always will keep my lines pure so I won't be crossing this line with the Albino line of the Amealco locale.