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Hypnale nepa (LAURENTI, 1768)

IUCN Red List - Hypnale nepa - Least Concern, LC

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Higher TaxaViperidae, Crotalinae, Colubroidea, Alethinophidia, Serpentes, Squamata (snakes) 
Common NamesSri Lanka Humpnose Viper 
SynonymColuber nepa LAURENTI 1768: 97
Hypnale nepa — GÜNTHER 1864 (part.)
Ancistrodon hypnale BOULENGER 1896
Ancistrodon nepa — SMITH 1937
Ancistrodon nepa — SMITH 1943: 500
Agkistrodon nepa — TAYLOR 1950: 595
Agkistrodon walli GLOYD 1977
Hypnale walli — WELCH 1994: 67
Hypnale nepa — WELCH 1994: 67
Hypnale nepa — MCDIARMID, CAMPBELL & TOURÉ 1999: 310
Hypnale walli — MCDIARMID, CAMPBELL & TOURÉ 1999: 311
Hypnale walli — GUMPRECHT et al. 2004
Hypnale nepa — GUMPRECHT et al. 2004
Hypnale nepa — WALLACH et al. 2014: 343 
DistributionSri Lanka, elevations above 900 m.

Type locality: “obviously Sri Lanka” fide HOGE & ROMANO-HOGE (1981: 199); originally given as “Habitat in Africa”, in error. Type locality of neotype: Agra Arboretum, Agarapatana, 06º50’N, 80º40’ E, elevation 1665 m.

walli: S Sri Lanka;Type locality: Kanneliya Forest, Udugama, Southern Province, Ceylon, elevation approx. 1000 ft.  
TypesNeotype: NMSL (= WHT) 6515 (designated by MAduwage et al. 2009) 
DiagnosisDiagnosis in Maduwage et al. 2009. 
  • 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
  • Ganesh, S. R.; Subramanian Bhupathy, Patrick David, N. Sathishkumar, G. Srinivas 2014. Snake Fauna of High Wavy Mountains, Western Ghats, India: Species Richness, Status, and Distribution Pattern. Russ. J. Herpetol. 21 (1): 53-64
  • Gloyd, H.K. 1977. Descriptions of new taxa of crotalid snakes from China and Ceylon (Sri Lanka). Proc. Biol. Soc. Washington 90: 1002-1015 - get paper here
  • Gumprecht, A.; Tillack, F.; Orlov, N.L.; Captain, A. & Ryabow, S. 2004. Asian pitvipers. Geitje Books, Berlin, 368 pp.
  • Hoge & ROMANO-Hoge 1981. Poisonous snakes of the world. Part I. Check list of the pit vipers, Viperoidea, Viperidae, Crotalinae. Mem. Inst. Butantan 42/43 [1978-1979]: 179-309 - get paper here
  • Janzen, P.; Klaas, P. & Ziesmann, S. 2007. Sri Lankas Schlangenfauna. Draco 7 (30): 56-64 - get paper here
  • Laurenti, J. N. 1768. Specimen medicum, exhibens synopsin reptilium emendatam cum experimentis circa venena et antidota reptilium austracorum, quod authoritate et consensu. Vienna, Joan. Thomae, 217 pp. - get paper here
  • MADUWAGE, KALANA; ANJANA SILVA, KELUM MANAMENDRA-ARACHCHI & ROHAN PETHIYAGODA 2009. A taxonomic revision of the South Asian hump-nosed pit vipers (Squamata: Viperidae: Hypnale). Zootaxa 2232: 1-28 - get paper here
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 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.
  • Taylor, Edward H. 1950. The snakes of Ceylon. Univ. Kansas Sci. Bull. 33 (14): 519-603 - 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.
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