Dendrelaphis nigroserratus VOGEL, VAN ROOIJEN & HAUSER, 2012
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Dendrelaphis nigroserratus
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| Higher Taxa | Colubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Saw-tooth-necked Bronzeback |
| Synonym | Dendrelaphis nigroserratus VOGEL, VAN ROOIJEN & HAUSER 2012 Dendrelaphis striatus — SEESOOK 2000 Dendrelaphis striatus — PAUWELS et al. 2000 Dendrelaphis cyanochloris — PAUWELS et al. 2003 Dendrelaphis nigroserratus — WALLACH et al. 2014: 219 |
| Distribution | West Thailand (Tak, Surat Thani, Kamphaeng Phet, Phetchaburi, Kanchanaburi), extreme S Myanmar (Mergui, Myeik) Type locality: Umphang Wildlife Sanctuary, Umphang district, province Tak, Thailand. Found on Highway 1090, at 5.1 km north and uphill from the bridge over the Mae Klong Khi, near the Karen village of Mae Klong Khi, c. 1100 m elevation. |
| Reproduction | oviparous. |
| Types | Holotype: QSMI 1282, juvenile road-killed female (Fig. 4, 6) collected by Sjon Hauser, on 13 October 2011 Paratypes: (2 specimens). BMNH 1946.1.6.13 (formerly 1925.9.17.16), female, “Mergui, Burma”, collector F. Wall; ZFMK 92809, damaged specimen, sex unknown, probably a female, “Between Umphang and Mae Sot, Tak Province, Thailand”, collector: G. Vogel. |
| Diagnosis | Diagnosis: A species of the colubrid genus Dendrelaphis characterized by 1) a black postocular stripe that extends onto the neck where it forms a pronounced saw-tooth pattern that further posteriorly breaks up into broad black oblique bars, 2) ground colour olive, 3) pale ventrolateral line absent, 4) strongly enlarged vertebral scales, 5) 15 smooth dorsal scales at midbody, 6) 197–204 ventral scales, 7) 148–152 paired subcaudal scales, 8) anal shield divided, 9) relative tail-length 0.30–0.31, 10) 9 supralabials, 4th through 6th touch the eye, 11) maximum known total length 156 cm. |
| Comment | D. nigroserratus sp. nov. is similar to D. cyanochloris (Wall, 1921) with which it occurs sympatrically. It is distinguished from the latter by its highly conspicuous neck coloration, high incidence of paired postparietal shields and its much larger size. In coloration, it resem- bles D. striatus (Cohn, 1906) from which it is distinguished by several aspects of its morphology. Behavior: diurnal Habitat: fully arboreal (Harrington et al. 2018). |
| Etymology | The specific epithet is based on the Latin niger (black) and serrare (to saw) and refers to the conspicuous black zigzag (saw-toothed) pattern on the neck. |
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