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Enhydris innominata (MORICE, 1875)

IUCN Red List - Enhydris innominata - Data Deficient, DD
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Higher TaxaHomalopsidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Tay Ninh Water Snake 
SynonymHypsirhina innominata MORICE 1875: 58
Enhydris innominata — SMITH 1929
Enhydris innominata — SMITH 1943: 385
Enhydris innominata — MURPHY 2007: 128
Enhydris innominata — NGUYEN et al. 2009
Enhydris innominata — MURPHY & VORIS 2014: 16
Enhydris innominata — WALLACH et al. 2014: 271 
DistributionVietnam, Cambodia

Type locality: Tay-ninh, Cochinchina (= Tay Ninh Province, South Vietnam)  
Reproductionovovivparous 
TypesHolotype: MHNL (Lyon) 1235 
DiagnosisDiagnosis: Extremely low ventral count (106–117), 42–56 subcaudals, highly distinctive pattern of black lateral blotches (scalloped-shaped) arise from ventral surface. These distinguish this snake from most other Enhydris. Enhydris jagorii has a higher ventral count (117–127), and smaller temporal scales. Enhydris longicauda has more ventral scales (122–136) and more subcaudal scales (52–76) than innominata. Enhydris chanardi has a higher ventral scale count (110–125), small dorsolateral spots that involve two or three scales; and larger, plate-like temporal scales. Enhydris enhydris and E. subtaeniata have stripes in their patterns and smooth, striated dorsal scales and elongated anterior chin shields. This species has smooth scales without striations (MURPHY & VORIS 2014). 
CommentDistribution: reports from Thailand (Gyi 1970) have not been confirmed. 
EtymologyNamed after Latin “innominata”, meaning nameless. 
References
  • KARNS, DARYL R.; VIMOKSALEHI LUKOSCHEK; JENNIFER OSTERHAGE; JOHN C. MURPHY & HAROLD K. VORIS 2010. Phylogeny and biogeography of the Enhydris clade (Serpentes: Homalopsidae). Zootaxa 2452: 18–30 [erratum in Zootaxa 2514: 68] - get paper here
  • Morice, A. 1875. Coup d’oeil sur la faune de la Cochinchine française. H. Georg, Lyon, 101 pp.
  • Murphy, J.C. & Voris, H.K. 2014. A Checklist and Key to the Homalopsid Snakes (Reptilia, Squamata, Serpentes), with the Description of New Genera. FIELDIANA: LIFE AND EARTH SCIENCES (8): 1–43 - get paper here
  • Murphy, John C. 2007. Homalopsid Snakes: Evolution in the Mud. Krieger Publishing, Malabar, Florida, 249 pp.
  • Nguyen, S.V., Ho, C.T. and Nguyen, T.Q. 2009. Herpetofauna of Vietnam. Chimaira, Frankfurt, 768 pp.
  • Pandey, Deb Prasad 2018. New records of snakes from Chitwan National Park and vicinity, Central Nepal. Herpetology Notes 11: 679-696 - get paper here
  • Saint Girons, Hubert 1972. Notes sur l'Ecologie des Serpents du Cambodge. Zoologische Mededelingen 47: 65-87 - get paper here
  • Smith, M.A. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. 3 (Serpentes). Taylor and Francis, London. 583 pp.
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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