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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.


Taxonomy of the family Gekkonidae
Bibliography of the genus Nactus
Biodiversity of the family Gekkonidae








Genus
Nactus

Hook-toed Geckos

Hakenfingergeckos

Krogfingergekkoer

1983 Nactus Kluge (type species: Gymnodactylus arnouxii Dumeril 1851)
1988 Mascarenogecko Ulber & Gericke (type species: Gymnodactylus serpensinsula Loveridge 1951; syn. Bauer 1994)
Contents: 35 species, of which 33 (94.3%) are endemic. In addition to this, 1 species (soniae), which was also endemic, is considered extinct.
Endemism: 0% 100%
Remarks: Previously placed in Gymnodactylus or, more recently, in Cyrtodactylus. Two species are present in Palau, one undescribed and one tentatively assigned to pelagicus (Crombie & Pregill 1999).
Distribution: Mascarenes, E. Malay Archipelago, NE. Australia, W. Pacific Ocean.
Reported from: American Samoa, Australia (Queensland [incl. Torres Strait Islands (incl. Prince of Wales Island)]), Cook Islands (incl. Rarotonga), Fiji (incl. Rotuma), French Polynesia, Indonesia (Kai Islands, Morotai, Talaud Islands, Western New Guinea), Marshall Islands (incl. Arno Atoll), Mauritius (incl. Coin de Mire, Round Island), Micronesia (incl. Pohnpei [incl. Ant Atoll]), New Caledonia (incl. Grande Terre, Isle of Pines, Loyalty Islands), Niue, Northern Mariana Islands, Palau, Papua New Guinea (Bismarck Archipelago [incl. Admiralty Islands (incl. Manus), New Britain, New Ireland], d'Entrecasteaux Islands [incl. Fergusson], Eastern New Guinea, Louisiade Archipelago [incl. Misima, Rossel, Sudest], Woodlark, North Solomon Islands [incl. Bougainville, Buka], Trobriand Islands), Solomon Islands (incl. Guadalcanal, Rennell, Santa Cruz Islands), Tokelau, Tonga, Tuvalu, Vanuatu (incl. Espiritu Santo), Wallis & Futuna, Western Samoa.

Nactus acutus

Rossel Island Hook-toed Gecko

Rossel-Hakenfingergecko

Rossel-krogfingergekko

2005 Nactus acutus Kraus

Distribution: Papua New Guinea (Louisiade Archipelago: Rossel).


Nactus aktites

Awar Hook-toed Gecko, Madang Coastal Slender-toed Gecko

Awar-Hakenfingergecko

Awar-krogfingergekko

2020 Nactus aktites Zug

Distribution: Papua New Guinea (Eastern New Guinea, Manam Island).





Nactus allenallisoni

Madang Hook-toed Gecko, Madang Slender-toed Gecko

Madang-Hakenfingergecko

Madang-krogfingergekko

2020 Nactus allenallisoni Zug

Distribution: Papua New Guinea (Eastern New Guinea, Karkar Island, Manam Island).





Nactus alotau

Southern Forest Hook-toed Gecko, Southern Forest Slender-toed Gecko

Alotau-Hakenfingergecko

Alotau-krogfingergekko

2020 Nactus alotau Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus amplus

Giant Hook-toed Gecko, Louisiade Giant Slender-toed Gecko

Riesen-Hakenfingergecko

Kæmpe-krogfingergekko

2020 Nactus amplus Zug

Distribution: Papua New Guinea (Louisiade Archipelago [Rossel, Sudest]).





Nactus arceo

Morotai Hook-toed Gecko, Morotai Slender-toed Gecko

Morotai-Hakenfingergecko

Morotai-krogfingergekko

2020 Nactus arceo Zug

Distribution: Indonesia (Morotai).





Nactus arfakianus

Arafak Hook-toed Gecko, Arafak Slender-toed Gecko

Arafak-Hakenfingergecko

Arafak-krogfingergekko

1874 Gymnodactylus arfakianus Meyer
Nactus arfakianus Zug 2020

Remarks: Previously regarded as a synonym of pelagicus (e.g., Bauer 1994). Revalidated as a separate species by Zug (2020).
Distribution: Indonesia (Biak, Numfoor, Yapen).





Nactus cheverti

Southern Cape York Hook-toed Gecko, (Chevert's Gecko)

Südlicher Cape-York-Hakenfingergecko

Sydlig Cape York-krogfingergekko

1877 Heteronota marmorata Macleay [not Cyrtodactylus marmoratus Gray 1831] (syn. Zug 1998; Shea & Sadlier 1999)
1885 Gymnodactylus cheverti Boulenger [substitute name for Heteronota marmorata Macleay 1877]
Nactus cheverti Zug 1998

Remarks: Previously regarded as a synonym of pelagicus (e.g., Bauer 1994). Revalidated by Zug (1998). A bisexual species.
Distribution: Australia (Queensland).


Nactus chrisaustini

Milne Bay Pygmy Hook-toed Gecko, Milne Bay Pygmy Slender-toed Gecko

Milne-Bay-Hakenfingergecko

Milne Bay-krogfingergekko

2020 Nactus chrisaustini Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus coindemirensis

Gunner's Coin Gecko

Gunner's-Coin-Hakenfingergecko

Gunner's Coin-krogfingergekko

1985 Nactus coindemirensis Bullock, Arnold & Bloxam

Distribution: Mauritius (Coin de Mire).


Nactus durrellorum

Round Island Hook-toed Gecko, (Durrells' Night Gecko)

Round-Island-Hakenfingergecko

Round Island-krogfingergekko

1994 Nactus serpensinsula durrelli Arnold & Jones
Nactus durrelli Arnold 2000
Nactus serpensinsula durrellorum [justified emendation] Michels & Bauer 2004
Nactus durrellorum Cole & Jones 2018

Extinct in: Mauritius (main island).
Distribution: Mauritius (Round Island).





Nactus eboracensis

Northern Cape York Hook-toed Gecko, (Cape York Bent-toed Gecko)

Nördlicher Cape-York-Hakenfingergecko

Nordlig Cape York-krogfingergekko

1877 Heteronota eboracensis Macleay
Nactus eboracensis Wells & Wellington 1984

Remarks: Previously regarded as a synonym of pelagicus (e.g., Kluge 1963; Bauer 1994). Revalidated by Zug (1998), although already Wells & Wellington (1984) regarded it as valid. A bisexual species.
Distribution: Australia (Queensland [incl. Torres Strait Islands]).


Nactus erugatus

Milne Bay Smooth-tailed Hook-toed Gecko, Milne Bay Smooth-tailed Slender-toed Gecko

Duabo-Hakenfingergecko

Duabo-krogfingergekko

2020 Nactus erugatus Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus fredkrausi

Misima Hook-toed Gecko, Kraus’s Giant Slender-toed Gecko

Misima-Hakenfingergecko

Misima-krogfingergekko

2020 Nactus fredkrausi Zug

Distribution: Papua New Guinea (Louisiade Archipelago: Misima).





Nactus galgajuga

Black Mountain Gecko

Black-Mountain-Hakenfingergecko

Black Mountain-krogfingergekko

1978 Cyrtodactylus galgajuga Ingram
Nactus galgajuga Kluge 1983

Distribution: Australia (Queensland).


Nactus grevifer

Torricelli Hook-toed Gecko, Torricelli Slender-toed Gecko

Torricelli-Hakenfingergecko

Torricelli-krogfingergekko

2020 Nactus grevifer Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus heteronotus

Central Savanna Hook-toed Gecko, Central Savanna Slender-toed Gecko

Hall-Sound-Hakenfingergecko

Hall Sound-krogfingergekko

1877 Heteronota fasciata Macleay [not Heteronota fasciata Blyth 1853; not Gymnodactylus fasciatus Duméril & Bibron 1834] (syn. Zug 2020)
1885 Gymnodactylus heteronotus Boulenger [substitute name for Heteronota fasciata Macleay 1877]
Nactus heteronotus Zug 2020

Remarks: Previously regarded as a synonym of pelagicus (e.g., Bauer 1994). Revalidated as a separate species by Zug (2020).
Distribution: Papua New Guinea (Eastern New Guinea).





Nactus intrudusus

Markham Hook-toed Gecko, Markham Slender-toed Gecko

Markham-Hakenfingergecko

Markham-krogfingergekko

2020 Nactus intrudusus Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus inundatus

Fly River Hook-toed Gecko, Fly River Slender-toed Gecko

Emeti-Hakenfingergecko

Emeti-krogfingergekko

2020 Nactus inundatus Zug

Distribution: Indonesia (Western New Guinea), Papua New Guinea (Eastern New Guinea).





Nactus kamiali

Kamiali Hook-toed Gecko, Kamiali Slender-toed Gecko

Kamiali-Hakenfingergecko

Kamiali-krogfingergekko

2020 Nactus kamiali Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus kunan

Manus Island Hook-toed Gecko, Admiralty Slender-toed Gecko, Bumble-bee Slender-toed Gecko

Manus-Hakenfingergecko

Manus-krogfingergekko

2012 Nactus kunan Zug & Fisher

Remarks: A bisexual species.
Distribution: Papua New Guinea (Admiralty Islands: Manus).


Nactus modicus

Louisiade Hook-toed Gecko, Louisiade Slender-toed Gecko

Louisiade-Hakenfingergecko

Louisiade-krogfingergekko

2020 Nactus modicus Zug

Distribution: Papua New Guinea (Louisiade Archipelago [Nimowa, Rossel, Sudest]).





Nactus multicarinatus

Melanesian Hook-toed Gecko, Melanesian Slender-toed Gecko, Solomons Slender-toed Gecko

Melanesischer Hakenfingergecko

Melanesisk Krogfingergekko

1872 Gymnodactylus multicarinatus Günther
Nactus multicarinatus Zug & Moon 1995

Remarks: Previously regarded as a synonym of pelagicus (e.g., Boulenger 1885, Wermuth 1965). Revalidated by Zug & Moon (1995). A bisexual species.
Distribution: Papua New Guinea (Eastern New Guinea, North Solomon Islands [incl. Bougainville], Solomon Islands (incl. Guadalcanal, Rennell, Santa Cruz Islands), Vanuatu (incl. Espiritu Santo).


Nactus nanus

Dwarf North-coast Hook-toed Gecko, Dwarf North-coast Slender-toed Gecko

Zwerg-Hakenfingergecko

Dværg-krogfingergekko

2020 Nactus nanus Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus notios

Southern Mountains Hook-toed Gecko, Southern Mountains Slender-toed Gecko

Südostlicher Hakenfingergecko

Sydøstlig Krogfingergekko

2020 Nactus notios Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus panaeati

Panaeati Hook-toed Gecko, Panaeati Slender-toed Gecko

Panaeati-Hakenfingergecko

Panaeati-krogfingergekko

2020 Nactus panaeati Zug

Distribution: Papua New Guinea (Louisiade Archipelago: Panaeati).





Nactus papua

Uraru Hook-toed Gecko, Papuan Slender-toed Gecko

Uraru-Hakenfingergecko

Uraru-krogfingergekko

2020 Nactus papua Zug

Distribution: Papua New Guinea (Eastern New Guinea).





Nactus pelagicus

Pacific Hook-toed Gecko, Pacific Slender-toed Gecko, Pelagic Gecko, Skink-toed Gecko, Southwest Pacific Bent-toed Gecko, (Rock Gecko)

Pazifischer Hakenfingergecko

Pacifisk Krogfingergekko

1857 Heteronota pelagica Girard
Gymnodactylus pelagicus Boulenger 1885
Cyrtodactylus pelagicus Underwood 1954
Nactus pelagicus Greer 1989
1851 Gymnodactylus arnouxii Duméril (see International Commission on Zoological Nomenclature 1991: Opinion 1647)
Nactus arnouxii Kluge 1983

Remarks: Previously included arfakianus, cheverti, eboracensis, heteronotus, multicarinatus, and undulatus, as well as the populations now assigned to aktites, allenallisoni, alotau, amplus, arceo, chrisaustini, erugatus, fredkrausi, grevifer, intrudusus, inundatus, kamiali, modicus, nanus, notios, panaeati, papua, rainerguentheri, robertfisheri, and septentrionalis. A parthenogenetic (all-female) species (Schwaner 1980). Apparently extinct in Guam (Rodda & Fritts 1992).
Introduced to: Indonesia (Talaud Islands), Papua New Guinea (Bismarck Archipelago: Admiralty Islands: Manus), North Solomon Islands: Bougainville).
Extinct in: Guam.
Distribution: American Samoa, Cook Islands (incl. Rarotonga), Fiji (incl. Rotuma), French Polynesia, Marshall Islands (incl. Arno Atoll), Micronesia (incl. Pohnpei [incl. Ant Atoll]), New Caledonia (incl. Grande Terre, Isle of Pines, Loyalty Islands), Niue, Northern Mariana Islands, Palau, Tokelau, Tonga, Tuvalu, Vanuatu, Wallis & Futuna, Western Samoa.


Nactus rainerguentheri

Vogelkop Hook-toed Gecko, Vogelkop Slender-toed Gecko

Vogelkop-Hakenfingergecko

Vogelkop-krogfingergekko

2020 Nactus rainerguentheri Zug

Distribution: Indonesia (Western New Guinea).





Nactus robertfisheri

Bismarcks Hook-toed Gecko, Bismarcks Slender-toed Gecko

Bismarcks-Hakenfingergecko

Bismarcks-krogfingergekko

2020 Nactus robertfisheri Zug

Distribution: Papua New Guinea (Bismarck Archipelago [New Britain, New Ireland], North Solomon Islands [Bougainville]).





Nactus septentrionalis

North Coast Papuan Hook-toed Gecko, North Coast Papuan Slender-toed Gecko

Toem-Hakenfingergecko

Toem-krogfingergekko

2020 Nactus septentrionalis Zug

Distribution: Indonesia (Western New Guinea), Papua New Guinea (Eastern New Guinea).





Nactus serpensinsula

Serpent Island Gecko

Serpent-Island-Hakenfingergecko

Serpent Island-krogfingergekko

1951 Gymnodactylus serpensinsula Loveridge
Cyrtodactylus serpensinsula Underwood 1954
Nactus serpensinsula Kluge 1983

Remarks: Previously included durrellorum.
Distribution: Mauritius (Serpent Island).


Nactus soniae

Reunion Hook-toed Gecko

Reunion-Hakenfingergecko

Reunion-krogfingergekko

2008 Nactus soniae Arnold & Bour

Distribution: Reunion.





Nactus sphaerodactylodes

Sudest Hook-toed Gecko

Sudest-Hakenfingergecko

Sudest-krogfingergekko

2005 Nactus sphaerodactylodes Kraus

Distribution: Papua New Guinea (Louisiade Archipelago [incl. Misima, Sudest], Woodlark).


Nactus undulatus

Kei Hook-toed Gecko, Kei Slender-toed Gecko

Kei-Hakenfingergecko

Kei-krogfingergekko

1926 Gymnodactylus pelagicus undulatus Kopstein
Cyrtodactylus pelagicus undulatus Underwood 1954 [by implication]
Nactus arnouxii undulatus Kluge 1983 [by implication]
Nactus pelagicus undulatus Bauer 1994
Nactus undulatus Zug 2020

Remarks: Previously regarded as a subspecies of pelagicus (e.g., Bauer 1994). Raised to species status by Zug (2020).
Distribution: Indonesia (Kai Islands).





Nactus vankampeni

Modderlust Hook-toed Gecko, (Papuan Hook-toed Gecko)

Modderlust-Hakenfingergecko, (Papuanischer Hakenfingergecko)

Modderlust-krogfingergekko, (Papuansk Krogfingergekko)

1933 Gymnodactylus vankampeni Brongersma
Phyllurus vankampeni Underwood 1954
Cyrtodactylus vankampeni Brown & Parker 1973
Nactus vankampeni Kluge 1983

Distribution: Indonesia (Western New Guinea), Papua New Guinea (Eastern New Guinea).