Keywords: Hypsiglena torquata texana distribution.svg The distribution of Hypsiglena torquata subsp texana Data from Mulcahy D G 2008 Phylogeography and species boundaries of the western North American Nightsnake Hypsiglena torquata Revisiting the subspecies concept Molecular Phylogenetics and Evolution 46 3 1095 “1115 10 1016/j ympev 2007 12 012 BlankMap-World6 svg 2011-03-14 21 53 UTC BlankMap-World6 svg Canuckguy <small> talk </small> and many others see File history derivative work Ninjatacoshell <span class signature-talk >talk</span> Hypsiglena jani Hypsiglena torquata distribution maps |