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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)
Common NamesE: Tay Ninh Water Snake 
SynonymHypsirhina innominata MORICE 1875: 58
Enhydris innominata — SMITH 1929
Enhydris innominata — SMITH 1943: 385
Enhydris innominata — NGUYEN et al. 2009
Enhydris innominata — MURPHY & VORIS 2014: 16
Enhydris innominata — WALLACH et al. 2014: 271 
DistributionVietnam, Thailand, Cambodia

Type locality: Tay-ninh, Cochinchina (= Tay Ninh Province, South Vietnam)  
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 distin- guish 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. subtae- niata 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). 
EtymologyNamed after Latin “innominata”, meaning nameless. 
  • 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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