FIGURE 23 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)

FIGURE 23. Color patterns and color tones variability of Leptophis nigromarginatus: (A) dorsal view of the head and (B) ventral view of the body of the holotype (BMNH 1946.1.5.7) from "Upper Amazons". Arrow indicating ventral scale edged anteriorly and laterally with greenish blue, a characteristic thought by Oliver (1948: 246) to be typical of L. a. ortoni. Note two black spots in center of each parietal scale, a larger black spot on right supraocular scale, and two smaller spots on left supraocular scale; (C) KU 112279 and (D) KU 155512, a female and a male, respectively, from Santa Cecília, Ecuador. Both show distinct differences in the prominence of supracephalic black borders and spots, being both more prominent in the female specimen. Scale bar = 0.5 cm. Photos by N.R. Albuquerque (A –B) and A. Motta (C–D).