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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Natricinae
Genus: Xenochrophis
Species (5): X. bellulus – X. cerasogaster – X. maculatus – X. trianguligerus – X. vittatus


Xenochrophis Günther, 1864: 273

Type species: Psammophis cerasogaster Cantor, 1839, by monotypy.

Primary references

Günther, A.C.L.G. 1864. The Reptiles of British India. Ray Society: London. xxvii + 452 pp. BHL Reference page.

Additional references

Purkayastha, J., Kalita, J., Brahma, R.K., Doley, R. & Das, M. 2018. A review of the relationships of Xenochrophis cerasogaster Cantor, 1839 (Serpentes: Colubridae) to its congeners. Zootaxa 4514(1): 126–136. DOI: 10.11646/zootaxa.4514.1.10 Paywall. Reference page.


Uetz, P. & Hallermann, J. 2021. Xenochropis . The Reptile Database. Accessed on 10 October 2019.
Xenochrophis – Taxon details on Interim Register of Marine and Non-marine Genera (IRMNG).
Xenochrophis – Taxon details on Integrated Taxonomic Information System (ITIS).

Vernacular names
English: Oriental Painted Keelbacks
ไทย: งูลายสอ

Xenochrophis is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to Asia. Some members have been moved to the genus Fowlea.

Species of Xenochrophis

The following species are recognized as being valid.[1]

Image Scientific name Common Name Distribution
Xenochrophis bellulus (Stoliczka, 1871) Burmese keelback water snake or Burmese white-barred keelback Myanmar
Painted Keelback (X.cerasogaster).jpg Xenochrophis cerasogaster (Cantor, 1839) painted keelback Pakistan, Nepal, Bangladesh, and India (Assam, Uttar Pradesh, West Bengal:- Kolkata).
Spotted Keelback (Xenochrophis maculatus) juvenile (14197257122).jpg Xenochrophis maculatus (Edeling, 1864) spotted keelback Indonesia, Malaysia, Brunei and Singapore.
Triangle-keelback-xenochrophis-trianguligerus-2.jpg Xenochrophis trianguligerus (F. Boie, 1827) triangle keelback Brunei Darussalam, Burma (Myanmar), Cambodia, India (Nicobar Islands; Arunachal Pradesh (Deban - Changlang district)), Indonesia (Nias, Mentawai, Sumatra, Laos, Malaysia (Malaya and East Malaysia), Singapore, Thailand, and Vietnam.
Xenoch vittatus 050507 RwG 8608.jpg Xenochrophis vittatus (Linnaeus, 1758) banded keelback or striped keelback Indonesia (Bangka, Java, Sumatra, We, Sulawesi) and Singapore

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Xenochrophis.

Genus Xenochrophis at The Reptile Database. The Reptile Database.

Further reading

Boulenger GA (1893). Catalogue of the Snakes in the British Museum (Natural History). Vol. I., Containing the Families ... Colubridæ Aglyphæ, part. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiii + 448 pp. + Plates I-XXVIII. (Genus Xenochrophis, p. 191).
Günther ACLG (1864). The Reptiles of British India. London: The Ray Society. (Taylor and Francis, printers). xxvii + 452 pp. + Plates I-XXII. (Xenochrophis, new genus, p. 273).

Smith MA (1943). The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-region. Reptilia and Amphibia. Vol. III.—Serpentes. London: Secretary of State for India. (Taylor and Francis, printers). xii + 583 pp. (Genus Xenochrophis, p. 317).


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