Nactus serpensinsula (LOVERIDGE, 1951)

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Higher Taxa	Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies	Nactus serpensinsula durrellorum ARNOLD & JONES 1994 Nactus serpensinsula serpensinsula (LOVERIDGE 1951)
Common Names	E: Serpent Island Gecko G: Serpent-Insel-Gecko
Synonym	Gymnodactylus 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
Distribution	Mauritius (Serpent Island [serpensinsula], Round-Island [durrelli]) Type locality: Serpent Island, off the North coast of Mauritius.
Reproduction	oviparous
Types	Holotype: 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]
Diagnosis	Diagnosis (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).
Comment	From Mauritius only fossils are known (F. Glaw, pers. comm.).
Etymology	Named after the type locality, Serpent Island. N. 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 - get paper here 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] [Note: Dubois 2007 rejected most of the changes made in this paper] - 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
External links	IUCN Red List Google images

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