Malayotyphlops, Hedges, Marion, Lipp, Marin & Vidal, 2014

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 : 29-30

Malayotyphlops

Key to Philippine species.

1a. Small subocular scale present, in contact with second and third supralabial scales, preocular scale, and ocular scale...................................... Malayotyphlops manilae

1b. Small subocular scale absent................................................... 2

2a. Dorsal body scales in <29 longitudinal rows at midbody............................ 3

2b. Dorsal body scales in ≥ 29 (usually 30) longitudinal rows at midbody; a dark dorsal stripe present with sharply defined lateral edges............................................. 9

3a. Third supralabial scale does not extend dorsally to levels of nostrils ( Fig. 40A )................................................................... Malayotyphlops denrorum

3b. Third supralabial scale extends dorsally to levels of nostrils ( Fig. 40B )................. 4

4a. Preocular scale overlaps second supralabial scale, and postnasal scale does not overlap third supralabial scale ( Fig. 40B )..................................................... 5

4b. Preocular scale does not overlap second supralabial scale and postnasal scale overlaps third supralabial scale ( Fig. 40C )..................................................... 6

5a. Dorsal body scales in 26 longitudinal rows behind head; dorsal stripe ≥ 17 scale rows wide on anterior of body.......................................... Malayotyphlops hypogius

5b. Dorsal body scales in 28 longitudinal rows behind head; dorsal stripe 15 scale rows wide on anterior of body, narrowing posteriorly....................... Malayotyphlops luzonensis

6a. Well-delineated, dark dorsal stripe 9–11 scale rows wide, not narrowing posteriorly.............................................................. Malayotyphlops castanotus

6b. Lateral scale rows of dorsal stripe lighter than (or not as completely pigmented as) medial rows; dorsal stripe narrows posteriorly................................................. 7

7a. Pale (unpigmented) collar present behind head; dorsal body scales in> 400 transverse rows between head and tail....................................... Malayotyphlops collaris

7b. No pale collar behind head; dorsal body scales in <400 transverse rows between head and tail........................................................................... 8

8a. Dark dorsal body stripe 15 scale rows wide on anterior of body...... Malayotyphlops ruber

8b. Dark dorsal body stripe 13 scale rows wide on anterior of body...... Malayotyphlops andyi

9a. Dorsal body scales in> 350 transverse rows between head and tail......................................................................... Malayotyphlops canlaonensis

9b. Dorsal body scales in <350 transverse rows between head and tail........................................................................... Malayotyphlops ruficaudus

Figures

FIGURE 40. Lateral view of head of (A) Malayotyphlops denrorum (PNM 9813; a redrafting by EH of original image in Wynn et al. 2016), (B) Malayotyphlops luzonensis (CM 2653; a redrafting by EH of original image in Wynn et al. 2016), (C) Malayotyphlops castanotus (CAS SUR-27940; a redrafting by EH of original image in Wynn et al. 1993). Postnasal scale (blue; or posterior part of nasal scale, if nasal scale incompletely sdivided), preocular scale (green), second supralabial scale (purplish-gray), third supralabial scale (reddish brown). Figs. A–C reproduced and modified with permission of A. Wynn and Journal of Herpetology.