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Dendrelaphis bifrenalis (BOULENGER, 1890)

IUCN Red List - Dendrelaphis bifrenalis - Least Concern, LC
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Higher TaxaColubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesBoulenger's Bronzeback 
SynonymDendrophis bifrenalis BOULENGER 1890: 338
Dendrophis bifrenalis — BOULENGER 1894: 80
Dendrophis bifrenalis — WALL 1921: 215
Dendrophis boiga bifrenalis — MEISE & HENNIG 1932
Ahaetulla bifrenalis — SMITH 1943: 246
Ahaetulla bifrenalis — TAYLOR 1950: 554
Dendrelaphis bifrenalis — DAS 1996: 55
Dendrelaphis bifrenalis — KARUNARATHNA & AMARASINGHE 2011
Dendrelaphis bifrenalis — WALLACH et al. 2014: 215 
DistributionSri Lanka

Type locality: Ceylon  
Reproductionoviparous. 
TypesSyntypes: BMNH 94.9.11.20, Ceylon; BM 1905.3.25.98, Pundaluoya, 4000 feet, Ceylon; USNM 267765, Labugama, Sri Lanka. A fourth specimen marked as type in the collection of the British Museum (BM 94.9.11.20), should not be regarded as part of the type series 
Diagnosis 
CommentDendrelaphis bifrenalis is the smallest of the five Dendrelaphis in Sri Lanka and can be easily distinguished from its congeners by the presence of a red tongue, and two loreal scales (de Silva 1980).

Distribution: Has been erroneously (?) reported from India, e.g. by WALL 1921: 158. Not in India fide I. Das (pers. comm., 25 July 2012).

Behavior: diurnal

Habitat: arboreal 
Etymology 
References
  • Blackburn, D.G. 1993. STANDARDIZED CRITERIA FOR THE RECOGNITION OF REPRODUCTIVE MODES IN SQUAMATE REPTILES. Herpetologica 49 (1): 118-132 - get paper here
  • Boulenger, George A. 1890. The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. Taylor & Francis, London, xviii, 541 pp. - get paper here
  • Boulenger, George A. 1894. Catalogue of the snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. British Mus. (Nat. Hist.), London, xi, 382 pp. - get paper here
  • Jayaneththi, Hareschandra Bandula 2015. Vertebrate fauna of Morankanda-Mukalana secondary forest patch in Sri Lanka: A checklist reported from 2004-2008 survey. RUHUNA JOURNAL OF SCIENCE 6: 21- 41
  • Karunarathna, Suranjan D. M. S. and A. A. Thasun Amarasinghe 2011. A PRELIMINARY SURVEY OF THE REPTILE FAUNA IN NILGALA FOREST AND ITS VICINITY, MONARAGALA DISTRICT, SRI LANKA. Taprobanica 3 (02): 69-76
  • Meise,Wilhelm & HENNIG,Willi 1932. Die Schlangengattung Dendrophis. Zool. Anz. 99 (11/12): 273-297
  • Pyron, R. Alexander; H.K. Dushantha Kandambi, Catriona R. Hendry, Vishan Pushpamal, Frank T. Burbrink, Ruchira Somaweera 2013. Genus-level phylogeny of snakes reveals the origins of species richness in Sri Lanka. Molecular Phylogenetics and Evolution 66 (3): 969-978 - get paper here
  • Sharma, R. C. 2004. Handbook Indian Snakes. AKHIL BOOKS, New Delhi, 292 pp.
  • 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.
  • SUDASINGHE, H. B. S. A. T. 2010. Beobachtung einer Dendrelaphis bifrenalis (Reptilia: Colubridae) beim Fressen eines Polypedates cruciger (Amphibia: Rhacophoridae) in Sri Lanka. Sauria 32 (4): 75-78 - get paper here
  • Taylor, Edward H. 1950. The snakes of Ceylon. Univ. Kansas Sci. Bull. 33 (14): 519-603 - get paper here
  • Vogel, Gernot & Johan van Rooijen 2011. A NEW SPECIES OF Dendrelaphis (SERPENTES: COLUBRIDAE) FROM THE WESTERN GHATS - INDIA. Taprobanica 3 (02): 77-85.
  • Wall, FRANK 1921. Ophidia Taprobanica or the Snakes of Ceylon. Colombo Mus. (H. R. Cottle, govt. printer), Colombo. xxii, 581 pages - get paper here
  • Wall,F. 1913. Notes on some interesting snakes recently presented to the Society. J. Bombay nat. Hist. Soc. 22: 639 - get paper here
  • Wall. F. 1921. Remarks on the lndian species of Dendrophis and Dendrelaphis. Records of the Indian Museum 22: 151 - 162 - get paper here
  • 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.
  • WICKRAMASINGHE, L.J. MENDIS 2016. A new canopy-dwelling species of Dendrelaphis (Serpentes: Colubridae) from Sinharaja, World Heritage Site, Sri Lanka. Zootaxa 4162 (3): 504–518 - get paper here
 
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