FIGURE 2 in Carefully examining Bornean Stegonotus (Serpentes, Colubridae): the montane groundsnake population in Sabah is a new and distinct species

FIGURE 2. Schematic of a typical Stegonotus head (specifically, the head of the holotype of S. ayamaru, RMNH.RENA 31199) to illustrate the head-scale pattern and some character definitions. (A) Dorsal view. Labeled head scales include internasals (IN), prefrontals (PF), frontal (F), supraoculars (SO), and parietals (P). Numbered points include (1) the anterior contact point of the internasals; (2) the posterior contact point of the internasals; (3) the anterior contact point of the prefrontals; (4) the posterior contact point of the prefrontals; (5) the posteriormost point of the frontal, wher... Mehr ...