Pythonidae, Fitzinger, 1826

Weinell, Jeffrey L., Hooper, Errol, Leviton, Alan E. & Brown, Rafe M., 2019, Illustrated Key to the Snakes of the Philippines, Proceedings of the California Academy of Sciences 66 (1), pp. 1-49 : 15-16

Pythonidae

Represented by a single genus.................................... Malayopython (p. 29)

Typhlopidae Key to Philippine genera.

1a. Posterior origin of nasal suture is preocular scale ( Fig. 21A ).......... Indotyphlops (p. 27)

1b. Posterior origin of nasal suture is the second supralabial scale ( Fig. 21B )............... 2 2a. Prefrontal scale much wider than rostral scale ( Fig. 22A )............ Acutotyphlops (p. 19)

2b. Prefrontal scale narrower than rostral scale ( Fig. 22B–C )............................ 3

3a. Rostral scale beaked ( Fig. 23A ).............................. Ramphotyphlops (p. 33)

3b. Rostral scale rounded ( Fig. 23B ).............................. Malayotyphlops (p. 29)

Viperidae Key to Philippine genera.

1a. Some scales on head strongly keeled ( Fig. 24a ); second supralabial scale not in contact with scale forming anterior border of heat sensing pit................... Tropidolaemus (p. 34)

1b. Scales on head smooth ( Fig. 24b ); second supralabial scale in contact with scale forming anterior border of heat sensing pit................................... Trimeresurus (p. 34)

Figures

FIGURE 21. Lateral view of head of (A) Indotyphlops braminus (specimen number unknown; redrawn from Taylor 1922a), (B) Ramphotyphlops cumingii (EHT R-99; a redrafting by EH of original image in Taylor 1919). Second supral- abial scale (purplish-gray); preocular scale (green); nspo = nasal suture posterior origin scale.

FIGURE 22. Dorsal view of head of (A) Acutotyphlops banaorum (FMNH 262249; a redrafting by EH of original image in Wallach et al. 2007), (B) Malayotyphlops ruber (SMF 16616; a redrafting by EH of original image in Wynn et al. 2016), (C) Ramphotyphlops suluensis (PBS 2001; a redrafting by EH of original image in Taylor 1918). Prefrontal scale (green), rostral scale (purplish-gray). Fig. A reproduced and modified with permission of V. Wallach and Journal of Herpetology. Fig. B reproduced and modified with permission of A. Wynn and Journal of Herpetology.

FIGURE 23. Lateral view of head of (A) Ramphotyphlops marxi (FMNH 96520; a redrafting by EH of original image in Wallach 1993), (B) Malayotyphlops luzonensis (CM 2653; a redrafting by EH of original image in Wynn et al. 2016). Rostral scale (blue); arrow indicates either (A) beaked shape of rostral scale, or (B) rounded shape of rostral scale. Fig. A reproduced and modified with permission of V. Wallach and Journal of Herpetology. Fig. B reproduced and modified with permission of A. Wynn and Journal of Herpetology.

FIGURE 24. Ventral-lateral view of head of (A) Tropidolaemus subannulatus (KU 327425), (B) Trimeresurus flavomaculatus (KU 330050). Second supralabial scale (purplish-gray), scale anterior to heat sensing pit (green).