Morphological and molecular variation reveal cryptic diversity in the racer Philodryas patagoniensis (Girard, 1858) (Squamata: Colubridae)

Sulcate (A, C, E) and asulcate (B, D, F) faces of the hemipenes from both morphotypes: (A, B) B-morphotype specimen from the Monte of Plains and Plateaus (Neuquén province, MLP.JW 1821); (C, D) B-morphotype specimen from Pampa (Buenos Aires province, MLP.R 6039); and (E, F) A-morphotype specimen from Humid Chaco (Corrientes province, MLP.R 5449, holotype). Scale bars = 5 mm.