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Nactus serpensinsula (LOVERIDGE, 1951)

IUCN Red List - Nactus serpensinsula - Vulnerable, VU

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
SubspeciesNactus serpensinsula durrellorum ARNOLD & JONES 1994
Nactus serpensinsula serpensinsula (LOVERIDGE 1951) 
Common NamesE: Serpent Island Gecko
G: Serpent-Insel-Gecko 
SynonymGymnodactylus serpensinsula LOVERIDGE 1951
Cyrtodactylus serpeninsula — UNDERWOOD 1954: 475 (in error)
Gymnodactylus serpensinsula — WERMUTH 1965: 67
Nactus serpensinsula — KLUGE 1983: 469
Cyrtodactylus (Mascarenogecko) serpeninsula — ULBER & GERICKE 1988
Nactus serpensinsula — KLUGE 1993
Nactus (Mascarenogecko) serpensinsula — RÖSLER 2000: 96

Nactus serpensinsula durrellorum ARNOLD & JONES 1994
Nactus serpensinsula durrelli ARNOLD & JONES 1994
Nactus serpensinsula durrellorum — MICHELS & BAUER 2004 
DistributionMauritius (Serpent Island [serpensinsula], Round-Island [durrelli])

Type locality: Serpent Island, off the North coast of Mauritius.  
Reproductionoviparous 
TypesHolotype: MCZ 51550, gravid female
Holotype: BMNH 1992.771 (British Museum of Natural History, London) , female, collected August 1993 by C. G. Jones. Paratypes: BMNH, MCZ. [durrellorum] 
DiagnosisDiagnosis (durrellorum): A population of Nactus serpensinsula differing from the nominal form in its much smaller size (up to 56 mm from snout to vent (Bullocket al., 1985) but usually less, compared with up to 65 mm), more delicate build, relatively longer tail, rather flatter head, less elevated dorsal tubercles sometimes with the most anterior striation forming a keel that is more prominent than any others present, paler colouring in life and absence of well developed broad dark bars on the back (usually present in adult N. s. serpensinsula). (Arnold & Jones 1994). 
CommentFrom Mauritius only fossils are known (F. Glaw, pers. comm.). 
EtymologyN. s. durrelli has been named after Mrs. Gerald and Lee Durrell. 
References
  • Arnold, E.N. & C.G. JONES 1994. The night geckos of the genus Nactus in the Mascarene Islands with a description of the distictive population on Round Island. Dodo 30: 119-131.
  • Bullock D J; Arnold E N; Bloxam Q 1985. A new endemic gecko (Reptilia: Gekkonidae) from Mauritius. Journal of Zoology SERIES A 206(4) 1985: 591-599
  • Bullock, David J. 1986. The Ecology and Conservation of Reptiles on Round Island and Gunner's Quoin, Mauritius. Biological Conservation 37: 135 156
  • Kluge, A.G. 1983. Cladistic relationships among gekkonid lizards. Copeia 1983 (2): 465-475 - get paper here
  • Kraus, Fred 2005. The genus Nactus (Lacertilia: Gekkonidae): a phylogenetic analysis and description of two new species from the Papuan Region. Zootaxa 1061:1-28 - get paper here
  • Loveridge, A. 1951. A new gecko of the genus Gymnodactylus from Serpent Island. Proc. Biol. Soc. Washington 64:91—92. - get paper here
  • Michels, J.P. & A.M. Bauer 2004. Some corrections to the scientific names of amphibians and reptiles. Bonner Zoologische Beiträge 52: 83–94 [2005] - get paper here
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Ulber T & Gericke, F. 1988. Zur Problematik der Verwandtschaftsverhältnisse in der Gattung Cyrtodactylus Gray 1827 und Bemerkungen zur Gattung Nactus Kluge 1983 (Reptilia: Sauria: Gekkonidae). - Der Versuch einer - auch philosophischen - Analyse. Veröff. Naturhist. Mus. Schleusingen 3: 67-74
  • Underwood, Garth 1954. On the classifcation and evolution of geckos. Proc. Zool. Soc. London, 124 (3): 469-492
 
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