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Nactus pelagicus (GIRARD, 1858)

IUCN Red List - Nactus pelagicus - Least Concern, LC

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
SubspeciesNactus pelagicus pelagicus (GIRARD 1858)
Nactus pelagicus undulatus (KOPSTEIN 1926) 
Common NamesPelagic Gecko, Rock Gecko 
SynonymGymnodactylus Arnouxii DUMÉRIL 1851
Heteronota pelagica GIRARD 1858: 197
Gymnodactylus (Heteronota) arfakianus MEYER 1874: 129
Heteronota fasciata MACLEAY 1877: 100 (non Homonota fasciatus BLYTH)
Heteronota marmorata MACLEAY 1877: 100
Gymnodactylus arnouxii — BOULENGER 1885: 39
Gymnodactylus pelagicus - BOULENGER 1885: 40
Gymnodactylus heteronotus BOULENGER 1885: 41
Gymnodactylus pelagicus — GARMAN 1901: 1
Gymnodactylus pelagicus — DE ROOIJ 1915: 6
Cyrtodactylus pelagicus - UNDERWOOD 1954: 475
Nactus arnouxii - KLUGE 1983: 469
Nactus pelagicus - GREER 1989
Nactus pelagicus — RÖSLER 1995: 134
Nactus pelagicus — COGGER 2000: 253
Nactus ‘pelagicus’ — WILSON & SWAN 2010

Nactus pelagicus undulatus (KOPSTEIN 1926)
Gymnodactylus pelagicus undulatus KOPSTEIN 1926
Nactus arnouxii undulatus — KLUGE 1993: 23
Nactus (Nactus) pelagicus undulatus — RÖSLER 2000: 96 
DistributionFrom the Kei islands through New Guinea, Melanesia and into central Pacific; Micronesia (Lukunor Atoll, Uman District Islands etc.),
Akiaki, Tuamotu Archipelago, Fiji Islands, Rotuma, Western Samoa, Solomon Islands [Nactus multicarinatus; McCoy 2000], New Caledonia, Loyalty Islands, Vanuatu, Cook Islands (Roratonga), Tonga Islands, Guam
Indonesia (Talaud archipelago etc.),
Australia (Queensland: Cape York Peninsula and Mornington Island),

USA: Northern Mariana Islands, Guam.

undulatus: endemic to Kei islands

Type locality: Samoa (as Navigator Ils.) and Fiji. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
ReproductionNactus pelagicus is  
TypesSyntypes: USNM 5626 (2 specimens) 
CommentDistribution: Erroneously reported from the Society Archipelago (HR 26: 159). A population on Guam was thought to be extinct but rediscovered after 50 years (Rodda & Fritts 1996).

Synonymy: Gymnodactylus multicarinatus GÜNTHER 1872 has been removed from the synonymy of Nactus pelagicus and elevated to full species status by ZUG & MOON 1995. Heteronota eboracensis MACLEAY 1877 and Gymnodactylus cheverti BOULENGER 1885 are treated here as full species following COGGER 2000, although other authors synoymize them with N. pelagicus.

Type species: Gymnodactylus Arnouxii DUMÉRIL 1851 is the type species of the genus Nactus KLUGE 1983: 469 
EtymologyEtymology (genus): Nactus is Latin for "stumbled upon," which alludes to Kluge’s discovery by chance of the assemblage of species within Cyrtodactylus. 
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  • Zug, G. R. & B. R. MOON 1995. Systematics of the Pacific slender-toed geckos, Nactus pelagicus complex: Oceania, Vanuata, and Solomon Islands populations. Herpetologica 51 (1): 77-90. - get paper here
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