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Hydrophis coggeri (KHARIN, 1984)

IUCN Red List - Hydrophis coggeri - Least Concern, LC

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Higher TaxaElapidae (Hydrophiinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Slender-necked Seasnake 
SynonymLeioselasma coggeri KHARIN 1984: 1538
Hydrophis coggeri — BAUER & VINDUM 1990
Leioselasma coggeri — WELCH 1994: 71
Hydrophis coggeri — COGGER 2000: 715
Hydrophis coggeri — KHARIN 2005
Leioselasma coggeri — KHARIN 2005
Leioselasma coggeri — SANDERS et al. 2012
Leioselasma coggeri — WALLACH et al. 2014: 366 
DistributionAustralia (Western Australia),
New Caledonia/Loyalty Islands [HR 34: 388]

Type locality: Fiji, Port Suva.  
TypesHolotype: ZISP (ZIL) 19681 
DiagnosisSize: Maximum size approximately 1.3 m; average length about 1 m (Bauer & Sadlier 2000: 237).

Scalation: 29-35 midbody scale rows, 280-360 (usually less than 320) ventrals, approximately 37 subcaudals (Bauer & Sadlier 2000: 237).

Color: Body banded, with 30-40 black or gray bands alternating with pale olive or cream bands of approximately equal width. Ventral and posterior surfaces of tail black. Venter beneath anterior body also blackish (Bauer & Sadlier 2000: 237).

Variation: The lighter alternating bands of juveniles are yellowish in color (Bauer & Sadlier 2000: 237).

Comparisons: 30 pairs of alternating dark and light bands and a low number (< 30) of scale rows around the neck distinguish this species from aIl of its regional congeners (Bauer & Sadlier 2000: 237).

Illustration (head): Kharin 1984: 1539 

Habitat: marine. 
EtymologyNamed after Dr. Harold "Hal" George Cogger (b. 1935), and Australian herpetologist who spent his entire career at the Australian Museum, Sydney. 
  • Bauer, A. M. & SADLIER, R. A. 2000. The herpetofauna of New Caledonia. Contributions to Herpetology, 17; Society for Study Amphibians and Reptiles, Ithaca, New York.
  • 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
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - 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.
  • Ineich I.; Rasmussen A R. 1997. Sea snakes from New Caledonia and the Loyalty Islands (Elapidae, Laticaudinae and Hydrophiinae). Zoosystema 19 (2-3): 185-192.
  • Kharin V E 1984. A review of sea snakes of the group Hydrophis sensu lato (Serpentes, Hydrophiidae). 3. The genus Leioselasma [in Russian]. Zoologicheskii Zhurnal 63 (10): 1535-1546
  • Kharin, V.E. 2005. Distribution of a Little-Known Sea Snake Chitulia belcheri (Gray, 1849) and New Records of Rare Species of the Genus Leioselasma Lacepede, 1804 (Serpentes: Hydrophiidae). Russian Journal of Marine Biology 31 (3): 159-163 - get paper here
  • Kharin, V.E. 2005. On new findings of a rare sea snake Leioselasma czeblukovi Kharin, 1984, with remarks on species composition and taxonomical position of the genus Leioselasma Lacepede, 1804, (Serpentes: Hydrophiidae). Russian Journal of Marine Biology 31 (5): 269-272. - get paper here
  • Morrison, C. 2003. A Field Guide to the Herpetofauna of Fiji. Suva, Fiji: Institute of Applied Sciences, University of the South Pacific, 121 pp.
  • Rasmussen, A. R. & I. INEICH 2000. Sea snakes of New Caledonia and surrounding waters (Serpentes: Elapidae): first report on the occurence of Lapemis curtus and description of new species from the genus Hydrophis. Hamadryad 25 (2): 91-99 - 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
  • 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
  • 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.
  • 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.
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