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Taxonomy of the family Homalopsidae
Bibliography of the genus Cerberus
Biodiversity of the family Homalopsidae








Genus
Cerberus

Dog-faced Water Snakes, Bockadams

Hundskopf-Wassertrugnattern

Hundehovedsnoge

1829 Cerberus Cuvier (type species: Coluber cerberus Daudin 1803)
1803 Hurria Daudin (type species: Hurria bilineata Daudin 1803; syn. Murphy 2007)
1820 Strephon Goldfusz (type species: Hurria bilineata Daudin 1803; syn. Murphy 2007)
Contents: 5 species, of which 2 (40.0%) are endemic.
Endemism: 0% 100%
Distribution: S. Asia, Malay Archipelago, N. Australia.
Reported from: Australia (Northern Territory, Queensland [incl. Torres Strait Islands], Western Australia), Bangladesh, Brunei, Cambodia, East Timor, India (Andaman & Nicobar Islands [Andaman Islands, Nicobar Islands], Andhra Pradesh, Goa, Gujarat, Karnataka, Kerala, Maharashtra, Odisha, Tamil Nadu, West Bengal), Indonesia (Ambon, Babi, Bacan, Bali, Banggai Islands, Bangka, Bawean Islands, Buru, Buton, Enggano, Flores, Gorong Archipelago, Halmahera, Java, Kabaena, Kalimantan, Karimunjawa Islands, Komodo, Lembata, Lombok, Madura, Muna, Natuna Islands, Nias, Riau Islands, Rinca, Rote, Sangir Islands, Saparua, Savu, Seram, Siberut, Simeulue, Sipura, Sudarso Island, Sula Islands [Sanana], Sulawesi, Sumatra, Sumba, Sumbawa, Talaud Islands, Tanahjampea, Tanimbar Islands, Ternate, Togian Islands, Weh, West Timor, Western New Guinea, Wetar), Malaysia (Sabah, Sarawak, West Malaysia [incl. Seribuat Archipelago, (incl. Tioman)]), Myanmar, Palau, Philippines (Balbagon, Bantayan, Bohol, Catanduanes, Cebu, Dinagat, Jaguliao, Leyte, Luzon, Marinduque, Masbate, Mindanao, Negros, Palawan, Panay, Sibuyan, Siquijor, Sulu Islands [Jolo], Tablas, Ticao), Singapore, Sri Lanka, Thailand, Vietnam.

Cerberus australis

Australian Dog-faced Water Snake, Australian Bockadam

Australische Hundskopf-Wassertrugnatter

Australsk Hundehovedsnog

1842 Homalopsis australis Gray
Cerberus australis Gray 1849
Cerberus rynchops australis Loveridge 1948
1948 Cerberus rynchops novaeguineae Loveridge (Murphy 2007)
Cerberus novaeguineae Iskandar & Colijn 2001
1985 Cerberus montgomeryi Wells & Wellington (Murphy 2007)

Remarks: Gyi (1970) recognized australis as a separate species, but many authors did not followed this arrangement (e.g., Cogger, Cameron & Cogger 1983; Storr, Smith & Johnstone 1986), although some did (e.g., Aplin & Smith 2001; Murphy 2007). However, the results of Alfaro, Karns, Voris, Abernathy & Sellins (2004) and Murphy, Voris & Karns (2012) strongly supports the validity of the species. Iskandar & Colijn (2001) listed novaeguineae as a separate species, but without discussion or references. Although reported from Eastern New Guinea (Papua New Guinea) (e.g., Whitaker, Whitaker & Mills 1982 [as rynchops]), the species has (in New Guinea) so far only been reported from Western New Guinea (Indonesia) (O'Shea 1996). Known from a single specimen from Sumba, which may represent a waif (Murphy & Voris 2014) and is regarded as such herein.
Introduced to: Indonesia (Sumba, see remarks).
Distribution: Australia (Northern Territory, Queensland [incl. Torres Strait Islands], Western Australia), Indonesia (Sudarso Island, Western New Guinea).


Cerberus dunsoni

Palau Dog-faced Water Snake, Palau Bockadam

Palau-Hundskopf-Wassertrugnatter

Palau-hundehovedsnog

2012 Cerberus dunsoni Murphy, Voris & Karns

Distribution: Palau.


Cerberus microlepis

Lake Buhi Dog-faced Water Snake, Lake Buhi Bockadam

Luzon-Hundskopf-Wassertrugnatter

Luzon-hundehovedsnog

1896 Cerberus microlepis Boulenger
Hurria microlepis Taylor 1922

Distribution: Philippines (Luzon).


Cerberus rynchops

Western Dog-faced Water Snake, South Asian Bockadam

Westliche Hundskopf-Wassertrugnatter

Vestlig Hundehovedsnog

1799 Hydrus rynchops Schneider
Enhydris rynchops Sonnini & Latreille 1801
Homalopsis rhynchops Cantor 1847
Cerberus rynchops Günther 1864
Hurria rynchops Stejneger 1907
1802 Hydrus cinereus Shaw (Murphy, Voris & Karns 2012)
Cerberus cinereus Cantor 1839
1803 Coluber cerberus Daudin (Murphy, Voris & Karns 2012)
Homalopsis cerberus Fitzinger 1823
Cerberus cerberus Cuvier 1829
1803 Hurria bilineata Daudin (Murphy 2007)
1820 Python rhynchops Merrem [unjustified emendation of Cerberus rynchops Schneider 1799]
Homalopsis rhynchops Cantor 1847
Cerberus rhynchops Günther 1864
1820 Python molurus Merrem [not Coluber molurus (=Python molurus [Pythonidae]) Linnaeus 1758] (Murphy, Voris & Karns 2012)
1836 Cerberus grantii Cantor (Murphy, Voris & Karns 2012)
1828 Cerberus russelli Cuvier (Murphy, Voris & Karns 2012)

Remarks: Previously included schneiderii. A single record from Pakistan is considered doubtful (Khan 2002; Murphy 2007; Murphy, Voris & Karns 2012).
Distribution: Bangladesh, India (Andaman & Nicobar Islands [Andaman Islands, Nicobar Islands], Andhra Pradesh, Goa, Gujarat, Karnataka, Kerala, Maharashtra, Odisha, Tamil Nadu, West Bengal), Myanmar, Sri Lanka, Thailand.


Cerberus schneiderii

South East Asian Dog-faced Water Snake, Southeast Asian Bockadam

Südostasiatische Hundskopf-Wassertrugnatter

Sydøstasiatisk Hundehovedsnog

1837 Homalopsis schneiderii Schlegel
Cerberus schneiderii Murphy, Voris & Karns 2012
1849 Cerberus acutus Gray (Murphy, Voris & Karns 2012)
1849 Cerberus unicolor Gray (Murphy, Voris & Karns 2012)

Remarks: Previously regarded as a synonym of rynchops (e.g., Murphy 2007). Revalidated as a separate species by Murphy, Voris & Karns (2012). Leviton, Siler, Weinell & Brown (2018) did not include Marinduque, Sibuyan, and Tablas in the distribution of the species.
Distribution: Brunei, Cambodia, East Timor, Indonesia (Alor, Ambon, Babi, Bacan, Bali, Banggai Islands, Bangka, Bawean Islands, Buru, Buton, Enggano, Flores, Gorong Archipelago, Halmahera, Java, Kabaena, Kalimantan, Karimunjawa Islands, Komodo, Lembata, Lombok, Madura, Muna, Natuna Islands, Nias, Riau Islands, Rinca, Rote, Sangir Islands, Saparua, Savu, Seram, Siberut, Simeulue, Sipura, Sula Islands [Sanana], Sulawesi, Sumatra, Sumba, Sumbawa, Talaud Islands, Tanahjampea, Tanimbar Islands, Ternate, Togian Islands, Weh, West Timor, Wetar), Malaysia (Sabah, Sarawak, West Malaysia [incl. Seribuat Archipelago (incl. Tioman)]), Philippines (Balbagon, Bantayan, Bohol, Catanduanes, Cebu, Dinagat, Jaguliao, Leyte, Luzon, Marinduque, Masbate, Mindanao, Negros, Palawan, Panay, Sibuyan, Siquijor, Sulu Islands [Jolo], Tablas, Ticao), Singapore, Thailand, Vietnam.