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Microcephalophis gracilis (SHAW, 1802)

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Higher TaxaElapidae (Hydrophiinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Narrow-headed sea snake, Graceful small-headed, slender seasnake, common small-headed sea snake
Farsi: Mâr-e daryâï-ye sarkuchak-e barâzandeh
Chinese: 小头海蛇 
SynonymHydrus Gracilis SHAW 1802: 560
Disteira gracilis — FITZINGER 1826: 55
Microcephalophis gracilis — LESSON 1831
Hydrus kadellnagam BOIE 1827 (based on RUSSELL 1801)
Thalassophis microcephala SCHMIDT 1852: 78
Hydrophis microcephalus — DUMÉRIL, BIBRON & DUMÉRIL 1854: 1356
Hydrophis Gracilis — DUMÉRIL, BIBRON & DUMÉRIL 1854: 1352
Hydrophis microcephala — FISCHER 1856: 53
Hydrophis gracilis — FISCHER 1856: 54
Hydrophis leprogaster DUMÉRIL & BIBRON in FISCHER 1856: 53 (nom. nud.)
Hydrophis gracilis — GÜNTHER 1864: 373
Hydrophis gracilis — ANDERSON 1872
Hydophis Guntheri MURRAY 1884: 384
Hydrophis gracilis — BOULENGER 1896: 280
Distira gracilis — WALL 1909
Hydrophis rostralis SMITH 1917: 340
Microcephalophis gracilis — WALL 1921: 325
Microcephalophis gracilis gracilis — SMITH 1926
Microcephalophis gracilis — SMITH 1943: 472
Hydrophis gracilis — BAUER & VINDUM 1990
Hydrophis gracilis — WELCH 1994: 67
Microcephalophis gracilis — DAS 1996: 61
Hydrophis gracilis — COGGER 2000: 716
Microcephalophis gracilis — GROSSMANN & TILLACK 2001
Hydrophis gracilis — LEVITON et al. 2003
Hydrophis (Microcephalophis) gracilis — KHARIN 2004
Hydrophis gracilis — DAVID et al. 2004
Microcephalophis gracilis microcephalus — KHARIN 2005
Hydrophis gracilis — GREER 2006 (online)
Hydrophis gracilis — NGUYEN et al. 2009
Hydrophis gracilis — MURTHY 2010
Hydrophis gracilis — RASMUSSEN et al. 2011
Microcephalophis gracilis — SANDERS et al. 2012
Microcephalophis gracilis — WALLACH et al. 2014: 439
Microcephalophis gracilis — RASMUSSEN 2014
Microcephalophis gracilis — REZAIE-ATAGHOLIPOUR et al. 2016
Microcephalophis gracilis — EIPPER & EIPPER 2019
Hydrophis gracilis — WEINELL et al. 2019
Hydrophis gracilis — KAMALI 2020
Microcephalophis gracilis — ASH 2022
Microcephalophis gracilis — UKUWELA et al. 2022
Hydrophis gracilis — DAS 2023 
DistributionIndian Ocean: Pakistan, India (Gujarat etc.), Sri Lanka, Bangladesh, Myanmar (= Burma), Thailand, Philippines,
South China Sea northward to the coast of Fujian (China), Vietnam,
Persian Gulf to Bay of Bengal (Oman, United Arab Emirates, Iran)
Coast of Peninsular Malaysia through Indoaustralian Archipelago to New Guinea,
Melanesia
Indonesia (Borneo)

Type locality: not given (fide O’SHEA 1996)  
Reproductionovovivparous 
TypesHolotype: BMNH 1946.1.3.89
Syntype: ZMH R03347 [Thalassophis microcephalus] 
DiagnosisDiagnosis: Head small, body long and slender anteriorly; scales on thickest part of body juxtaposed; 5-6 maxillary teeth behind fangs; 17–21 scale rows around neck, 30–36 around thickest part of body (increase from neck to midbody 18–24); ventrals divided by a longitudinal fissure; prefrontal in contact with third upper labial; ventrals 220–287. Total length males 950 mm, females 1025 mm; tail length males 80 mm, females 95 mm. [after LEVITON 2003, but see also RASMUSSEN et al. 2011, REZAIE-ATAGHOLIPOUR et al. 2016: 156]


Additional details (1741 characters) are available for collaborators and contributors. Please contact us for details. 
CommentVenomous!

Synonymy partly after COGGER 1983 and STEJNEGER 1907.

Type species: Hydrus Gracilis SHAW 1802 is the type species of the genus Microcephalophis LESSON 1832.

Distribution: Erroneously reported from New Caledonia fide BAUER & SADLIER 2000. Reports from New Caledonia turned out to be H. coggeri (Rasmussen 2014). Not in Australian waters fide Rasmussen 2014. Reports from Australia are doubtful or misidentifications (e.g. of H. elegans).

Habitat: marine. 
EtymologyNamed after Latin “gracilis”, meaning small or lanky, or gracile. 
References
  • Anderson, J. 1872. On some Persian, Himalayan, and other Reptiles. Proc. Zool. Soc. London 1872: 371-404 - get paper here
  • Australian Society of Herpetologists (ASH) 2022. Official List of Australian Species. ASH - get paper here
  • Bauer, Aaron M.;Vindum, Jens V. 1990. A checklist and key to the herpetofauna of New Caledonia, with remarks on biogeography. Proc. Cal. Acad. Sci. 47 (2): 17-45 - get paper here
  • Boie, F. 1827. Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis von Oken 20: 508-566. - get paper here
  • Boulenger, G.A. 1896. Catalogue of the snakes in the British Museum, Vol. 3. London (Taylor & Francis), xiv + 727 pp. - get paper here
  • Carranza S, Xipell M, Tarroso P, Gardner A, Arnold EN, Robinson MD, et al. 2018. Diversity, distribution and conservation of the terrestrial reptiles of Oman (Sauropsida, Squamata). PLoS One 13 (2): e0190389 - get paper here
  • Chan-ard, T., Parr, J.W.K. & Nabhitabhata, J. 2015. A field guide to the reptiles of Thailand. Oxford University Press, NY, 352 pp. [see book reviews by Pauwels & Grismer 2015 and Hikida 2015 for corrections] - get paper here
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp. - get paper here
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Corkill, N. L. and Cochrane, J. A. 1966. The snakes of the Arabian Peninsula and Socotra. J. Bombay nat. Hist. Soc. 62 (3): 475-506 (1965) - get paper here
  • Das, I. 2012. A Naturalist's Guide to the Snakes of South-East Asia: Malaysia, Singapore, Thailand, Myanmar, Borneo, Sumatra, Java and Bali. Oxford J, ohn Beaufoy Publishing - get paper here
  • Das, Indraneil 2023. Snakes of a Continental Island: History and Patterns of Discovery of the Snake Fauna of Borneo to the Start of the Anthropocene. In: Lillywhite & Martins, eds., Islands and snakes, vol. II. Oxford University Press, p. 1 ff - get paper here
  • DAVID, Patrick; MEREL J. COX, OLIVIER S. G. PAUWELS, LAWAN CHANHOME AND KUMTHORN THIRAKHUPT 2004. Book Review - When a bookreview is not sufficient to say all: an in-depth analysis of a recent book on the snakes of Thailand, with an updated checklist of the snakes of the Kingdom. The Natural History Journal of Chulalongkorn University 4(1): 47-80 - get paper here
  • de Silva, A., K. D. B. Ukuwela, A. Sivaruban & Kate L. Sanders 2011. Preliminary observations on the reproductive biology of six species of Sri Lankan sea snakes (Elapidae: Hydrophiinae). Salamandra 47 (4): 193-198 - get paper here
  • Dowling, H.G., & Jenner, J.V. 1988. Snakes of Burma: checklist of reported species and bibliography. Smithsonian Herp. Inf. Serv. (76): 19 pp. - get paper here
  • Duméril, A. M. C., Bibron, G. & DUMÉRIL, A. H. A., 1854. Erpétologie générale ou histoire naturelle complète des reptiles. Tome septième. Deuxième partie, comprenant l'histoire des serpents venimeux. Paris, Librairie Encyclopédique de Roret: i-xii + 781-1536 - get paper here
  • Fischer, J.G. 1856. Die Familie der Seeschlangen. Abhandl. Nat. Ver. Hamburg 3: 1-78 - get paper here
  • Fitzinger, L. 1826. Neue Classification der Reptilien nach ihren natürlichen Verwandtschaften nebst einer Verwandschafts-Tafel und einem Verzeichnisse der Reptilien-Sammlung des K. K. Zoologischen Museums zu Wien. J. G. Heubner, Wien, 66 pp. - get paper here
  • Ganesh, S., Nandhini, T., Samuel, V., Sreeraj, C., Abhilash, K., Purvaja, R., & Ramesh, R. 2019. Marine snakes of Indian coasts: historical resume, systematic checklist, toxinology, status, and identification key. Journal of Threatened Taxa, 11(1), 13132-13150 - get paper here
  • Gardner, A.S. 2013. The amphibians and reptiles of Oman and the UAE. Edition Chimaira, 480 pp.
  • Grossmann,W. & Tillack,F. 2001. Bemerkungen zur Herpetofauna des Khao Lak, Phang Nga, thailändische Halbinsel. Teil II: Reptilia: Serpentes; Testudines; Diskussion. Sauria 23 (1): 25-40 - get paper here
  • Günther, A. 1864. The Reptiles of British India. London (Taylor & Francis), xxvii + 452 pp. - get paper here
  • Jongbloed, M. 2000. Field Guide to the reptiles and amphibians of the UAE - Wild about reptiles. Barkers Trident Communications, 116 pp.
  • Kamali, Kamran 2020. A Field Guide to the Reptiles and Amphibians of Iran. Edition Chimaira, Frankfurt am Main, Germany (www.chimaira.de). 574 pp.
  • Karthikeyan S. & Balasubramanian, T. 2007. Species diversity of Sea Snake (Hydrophiidae) distributed in the Coramantal Coast (East Coast of India). Int. J. Zool. res. 3 (3): 107-131
  • Kharin, V. E. 2006. An Annotated Checklist of Sea Snakes of Vietnam, with Notes on a New Record of the Yellow-Lipped Sea Krait, Laticauda colubrina (Schneider, 1799)(Laticaudidae, Hydrophiidae). Russian Journal of Marine Biology 32 (4): 223–228. - get paper here
  • Kharin, V.E. 2004. Review of Sea Snakes of the genus Hydrophis sensu stricto (Serpentes: Hydrophiidae). Russian Journal of Marine Biology 30 (6): 387-394 - get paper here
  • Kharin, V.E. 2004. A review of sea snakes of the genus Hydrophis sensu stricto (Serpentes, Hydrophiidae). [in Russian]. Biologiya Morya (Vladivostok) 30 (6): 447-454 - get paper here
  • Kharin, Vladimir E.; Jakob Hallermann 2009. Annotated catalogue of sea kraits (Laticaudidae) and sea snakes (Hydrophiidae) of the herpetological collection of the Zoological Museum, University of Hamburg. Mitt. hamb. zool. Mus. Inst. 106: 51-67
  • Lesson, R.P. 1831. Reptiles. pp. 291-336, pls. 1-7. In: I.G.S. Bélanger (ed.), Voyage aux Indes-Orientales, par le Nord de l'Europe, les Provinces du Caucase, la Géorgie, l'Armenie, et la Perse, . . . pendant les années 1825-29. Zoologie. A. Bertrand, Paris. xxxix + 535 p. [published in sections from 1831-1834] - get paper here
  • Leviton, A.E., R.M. Brown, and C.D. Siler. 2014. The dangerously venomous snakes of the Philippine Archipelago. in The Coral Triangle: The 2011 Hearst Biodiversity Philippine Expedition (G.C. Williams and T.M. Gosliner, eds.). California Academy of Sciences, USA, Pp 473–530
  • Leviton, Alan E.; Guinevere O.U. Wogan; Michelle S. Koo; George R. Zug; Rhonda S. Lucas and Jens V. Vindum 2003. The Dangerously Venomous Snakes of Myanmar Illustrated Checklist with Keys. Proc. Cal. Acad. Sci. 54 (24): 407–462 - get paper here
  • Leviton,A.E.; Anderson,S.C.; Adler, K.; Minton,S.A. 1992. Handbook to Middle East Amphibians and Reptiles. SSAR, Oxford, Ohio (Contr. to Herpetol. No. 8), 1-252
  • Mondal, S., Ganesh, S. R., & Raghunathan, C. 2023. Some rare species of sea snakes (Squamata: Serpentes: Elapidae: Hydrophiinae: Hydrophis, Microcephalophis) from the Indian Coasts and nearby waters, lodged in major systematic Indian zoological collections. Bonn zoological Bulletin 72 (2): 209–222 - get paper here
  • Murthy, T.S.N. 2010. The reptile fauna of India. B.R. Publishing, New Delhi, 332 pp.
  • Nguyen, S.V., Ho, C.T. and Nguyen, T.Q. 2009. Herpetofauna of Vietnam. Chimaira, Frankfurt, 768 pp.
  • O’Shea,M. 1996. A Guide to the Snakes of Papua New Guinea. Independent Publishing, Port Moresby, xii + 239 pp. - get paper here
  • Patel, Harshil; and Raju Vyas 2019. Reptiles of Gujarat, India: Updated Checklist, Distribution, and Conservation Status. Herpetology Notes 12: 765-777 - get paper here
  • Rajabizadeh, M. 2018. Snakes of Iran. [in Farsi] Tehran: Iranshenasi, 496 pp. [2017 ?] - get paper here
  • RASMUSSEN, ARNE REDSTED; JOHAN ELMBERG, PETER GRAVLUND & IVAN INEICH 2011. Sea snakes (Serpentes: subfamilies Hydrophiinae and Laticaudinae) in Vietnam: a comprehensive checklist and an updated identification key. Zootaxa 2894: 1–20 - get paper here
  • RASMUSSEN, ARNE REDSTED; KATE LAURA SANDERS, MICHAEL L. GUINEA & ANDREW P. AMEY 2014. Sea snakes in Australian waters (Serpentes: subfamilies Hydrophiinae and Laticaudinae)—a review with an updated identification key. Zootaxa 3869 (4): 351–371 - get paper here
  • RASTEGAR-POUYANI, NASRULLAH; HAJI GHOLI KAMI, MEHDI RAJABZADEH, SOHEILA SHAFIEI AND STEVEN CLEMENT ANDERSON 2008. Annotated Checklist of Amphibians and Reptiles of Iran. Iranian Journal of Animal Biosystematics 4 (1): 7-30
  • Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N 2016. Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129–164, doi: 10.3897/zookeys.622.9939 - get paper here
  • Russell, P. 1801. A continuation of an account of Indian serpents: containing descriptions and figures from specimens and drawings, transmitted from various parts of India to the hon. Court of Directors of the East Indian Company. Volume 2. London, W. Bulmer and Co for G. and W. Nicol., pp. i–v + 1–12, pls. 1–10, [see Adler 2015 for details] - get paper here
  • Sanders, K.L.; Michael S.Y. Lee, Mumpuni, Terry Bertozzi, Arne R. Rasmussen 2012. Multilocus phylogeny and recent rapid radiation of the viviparous sea snakes (Elapidae: Hydrophiinae). Molecular Phylogenetics and Evolution 66 (3): 575-591 - get paper here
  • Schmidt, Philipp 1852. Beiträge zur ferneren Kenntniss der Meerschlangen. Abh. Nat. Ver. Hamburg 2 (2): 69-86
  • Sharma, R. C. 2004. Handbook Indian Snakes. AKHIL BOOKS, New Delhi, 292 pp.
  • Shaw, G. 1802. General Zoology, or Systematic Natural History. Vol.3, part 2. G. Kearsley, Thomas Davison, London: 313-615 - get paper here
  • Smith, M.A. 1917. Preliminary diagnoses of four new sea snakes. J. Nat. Hist. Soc. Siam 2: 340 - 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.
  • Somaweera, R. & N. Somaweera 2009. An overview of Sri Lankan Sea snakes with an annotated checklist and a field key. Taprobanica 1 (1): 43-54 - get paper here
  • Stuebing, R.B. & INGER, R.F. 1999. A field guide to the snakes of Borneo. Natural history Publications (Borneo), Kota Kinabalu, 254 pp. [corrections in HR 31: 124]. - get paper here
  • Stuebing, R.B., Inger, R.F. & Lardner, B. 2014. A field guide to the snakes of Borneo, second edition. Natural history Publications (Borneo)
  • Taylor,E.H. 1965. The serpents of Thailand and adjacent waters. Univ. Kansas Sci. Bull. 45 (9): 609-1096 - get paper here
  • Ukuwela, K.D.B., de Silva, A., Sivaruban, A. et al. 2022. Diversity, distribution, and natural history of the marine snakes of Sri Lanka. Marine Biodiversity 52, 24 (2022) - get paper here
  • Volsøe, H. 1939. The sea-snakes of the Iranian Gulf and the Gulf of Oman. Danish Scientific Investigation in Iran 1: 9-45
  • Vyas, Raju 2007. Present conservation scenario of reptile fauna in Gujarat State, India. Indian Forester, Oct 2007: 1381-1394 - get paper here
  • Wall, F. 1918. Notes on a Collection of Sea Snakes from Madras. J. Bombay Nat. Hist. Soc. 25: 599-607 - get paper here
  • Wall, FRANK 1921. Ophidia Taprobanica or the Snakes of Ceylon. Colombo Mus. (H. R. Cottle, govt. printer), Colombo. xxii, 581 pages - 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.
  • Wang, C. G. M. Z. X., Jia, S. Y. K. T. L., & Hu, C. Z. J. 2022. An updated species checklist of amphibians and reptiles in Fujian Province, China. Biodiversity Science, 22090 - get paper here
  • Wang, Kai; Jinlong Ren, Hongman Chen, Zhitong Lyu, Xianguang Guo Ke Jiang, Jinmin Chen, Jiatang Li, Peng Guo, Yingyong Wang, Jing Che 2020. The updated checklists of amphibians and reptiles of China. Biodiversity Science 28 (2): 189-218 - get paper here
  • Weinell, Jeffrey L.; Errol Hooper, Alan E. Leviton, Rafe M. Brown 2019. Illustrated Key to the Snakes of the Philippines. Proc. Cal. Acad. Sci. (4) 66 (1): 1-49 - get paper here
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
  • Yaghmour, Fadi; Johannes Els, Clara Jimena Rodríguez-Zarate, Brendan Whittington-Jones 2023. Marine Reptiles of the United Arab Emirates. In: J. A. Burt (ed.), A Natural History of the Emirates. Springer, Cham, pp. 585-619 [2024] - get paper here
  • Zhao, E.M. 2006. The snakes of China [in Chinese]. Hefei, China, Anhui Sience & Technology Publ. House, Vol. I, 372 pp., Vol. II (color plates), 280 pp.
 
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