Fig. 12 in Integrated evidence sheds light on the taxonomy of the widespread Tantilla melanocephala species complex (Serpentes: Colubridae) and indicates the existence of a new species from southern South America

Fig. 12 Lectotype of Coluber melanocephalus (NRM 86). Head views on the (a) dorsal, (b) right lateral, (c) left lateral, and (d) ventral. Body views on the (e) dorsal and (f) ventral. Horizontal scale bar: 2 mm. Vertical scale bar: 10 mm