Lizard

I am pretty sure this is a Sceloporus sp. and looks like being Sceloporus variabilis, but I would be happy, if someone else could take a look at it to confirm or correct. Sceloporus chrysostictus would be another candidate, but Please, verify! http://reptile-database.reptarium.cz/species?genus=Sceloporus&species=variabilis http://commons.wikimedia.org/wiki/File:Sceloporus_variabilis.jpg http://www.pbase.com/tmurray74/image/35986665 http://greennature.com/gallery/lizard-pictures/spiny-lizards.html Looking at Sceloporus chrysostictus I am all of a sudden no more sure... How safe can these 2 species separated from each other?