Home - Taxonomy - Geography - Biodiversity - Literature - Purchase RepFocus Recent updates Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk). Latest update: August 27th, 2024. 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: 36 species, of which 34 (94.4%) 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 simakal Dauan Hook-toed Gecko Dauan-Hakenfingergecko Dauan-krogfingergekko 2024 Nactus simakal Hoskin, Davies & Aland Distribution: Australia (Queensland: Torres Strait Islands: Dauan). 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).