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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 Colubridae
Bibliography of the genus Opisthotropis
Biodiversity of the family Colubridae


Mountain Stream Keelbacks, Mountain Stream Snakes, Mountain Water Snakes



1872 Opisthotropis Günther (type species: Opisthotropis ater Günther 1872)
1888 Calamohydrus Boulenger (type species: Calamohydrus andersonii Boulenger 1888)
1891 Lepidognathus Lidth de Jeude (type species: Lepidognathus rugosus Lidth de Jeude 1890)
1895 Trimerodytes Cope (type species: Trimerodytes balteatus Cope 1895)
1899 Tapinophis Boulenger (type species: Tapinophis latouchii Boulenger 1899)
1904 Liparophis Peracca (type species: Liparophis bedoti Peracca 1904)
1909 Cantonophis Werner (type species: Cantonophis praefrontalis Werner 1909)
Contents: 25 species, of which 19 (76.0%) are endemic.
Endemism: 0% 100%
Remarks: Previously included Trimerodytes balteatus. Some authors have regarded Parahelicops as a synonym of Opisthotropis (e.g., Smith 1943; Brown & Leviton 1961; Zhao, Jiang & Huang 1978; Cox 1991; Cox, van Dijk, Nabhitabhata & Thirakhupt 1998). The origin and distribution of the type species of this genus, Opisthotropis ater, remains obscure (see remarks under ater). David, Pham, Nguyen & Ziegler (2011) pointed out that the grammatical gender of Opisthotropis is feminine.
Distribution: SE. Asia, Malay Archipelago.
Reported from: Brunei, Cambodia, China (Anhui, Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hong Kong, Hunan, Jiangxi, Sichuan, Yunnan, Zhejiang), Indonesia (Kalimantan, Sumatra), Japan (Ryukyu Islands [incl. Okinawa Islands (incl. Kumejima)]), Laos, Malaysia (Sabah, Sarawak), Philippines (Mindanao, Palawan), Thailand, Vietnam (incl. Cat Ba Island).

Opisthotropis alcalai

Mindanao Mountain Stream Keelback, (Alcala's Mountain Keelback)



1961 Opisthotropis alcalai Brown & Leviton

Distribution: Philippines (Mindanao).

Opisthotropis andersonii

Hong Kong Mountain Stream Keelback, (Anderson's Stream Snake, Anderson's Mountain Keelback)


Hong Kong-bjergvandsnog

1888 Calamohydrus Andersonii Boulenger
Opisthotropis andersoni Boulenger 1891

Distribution: China (Guangdong, Hong Kong), Vietnam (incl. Cat Ba Island).

Opisthotropis atra

(no common name)



1872 Opisthotropis ater Günther

Remarks: The type locality is West Africa, but since all other members of the genus are found in Southeast Asia and the Malay Archipelago, it is most likely that the type locality is in error (Murphy, Chan-ard, Mekchai, Cota & Voris 2008).
Distribution: Unknown.

Opisthotropis cheni

Guangdong Mountain Stream Keelback



1999 Opisthotropis cheni Zhao

Distribution: China (Guangdong, Hunan).

Opisthotropis cucae

Kon Tum Mountain Stream Keelback, (Cuc's Mountain Snake)


Kon Tum-bjergvandsnog

2011 Opisthotropis cucae David, Pham, Nguyen & Ziegler

Distribution: Vietnam.

Opisthotropis daovantieni

Gia Lai Mountain Stream Keelback, (Dao Van Tien's Stream Snake, Dao Van Tien's Mountain Keelback)


Gia Lai-bjergvandsnog

1998 Opisthotropis daovantieni Orlov, Darevsky & Murphy

Distribution: Vietnam.

Opisthotropis durandi

Luang Prabang Mountain Stream Keelback


Luang Prabang-bjergvandsnog

2014 Opisthotropis durandi Teynié, Lottier, David, Nguyen & Vogel

Distribution: Laos.

Opisthotropis guangxiensis

Guangxi Mountain Stream Keelback



1978 Opisthotropis guangxiensis Zhao, Jiang & Huang
1978 Opisthotropis yaoshanensis Huang & Zheng (Zhao & Adler 1993)

Distribution: China (Guangdong, Guangxi).

Opisthotropis haihaensis

Hai Ha Mountain Stream Keelback


Hai Ha-bjergvandsnog

2019 Opisthotropis haihaensis Ziegler, Pham, Nguyen, Nguyen, Wang, Wang, Stuart & Le

Remarks: Formerly regarded as a population of maculosa. Previously included the population now assigned to hungtai.
Distribution: China (Guangxi), Vietnam.

Opisthotropis hungtai

Heishiding Mountain Stream Keelback



2020 Opisthotropis hungtai Wang, Lyu, Zeng, Lin, Yang, Nguyen, Le, Ziegler & Wang

Remarks: Previously regarded as a population of maculosa or, more recently, haihaensis.
Distribution: China (Guangdong, Guangxi).

Opisthotropis jacobi

Chapa Mountain Stream Keelback, (Jacob's Stream Snake, Jacob's Mountain Keelback)



1933 Opisthotropis jacobi Angel & Bourret

Distribution: China (Yunnan), Vietnam.

Opisthotropis kikuzatoi

Ryukyu Mountain Stream Keelback, (Kikuzato's Stream Snake, Kikuzato's Brook Snake)



1958 Liopeltis kikuzatoi Okada & Takara
Opisthotropis kikuzatoi Mori 1984

Distribution: Japan (Ryukyu Islands: Okinawa Islands: Kumejima).

Opisthotropis kuatunensis

Striped Mountain Stream Keelback

Gestreifte Gebirgsflussnatter

Stribet Bjergvandsnog

1928 Opisthotropis kuatunensis Pope

Distribution: China (Fujian, Guangdong, Guangxi, Hong Kong, Jiangxi, Zhejiang).

Opisthotropis lateralis

Bicoloured Mountain Stream Keelback, Man-Son Mountain Stream Keelback, Tonkin Mountain Keelback, Bicoloured Keelback

Zweifarbige Gebirgsflussnatter

Tofarvet Bjergvandsnog

1903 Opisthotropis lateralis Boulenger
1930 Tapinophis shini Mell (Smith 1943)

Distribution: China (Guangdong, Guangxi, Guizhou, Hainan, Hong Kong), Vietnam.

Opisthotropis latouchii

South Chinese Mountain Stream Keelback, (Sichuan Mountain Keelback)

Südchinesische Gebirgsflussnatter

Sydkinesisk Bjergvandsnog

1899 Tapinophis latouchii Boulenger
Opisthotropis latouchii Pope 1935
1909 Cantonophis praefrontalis Werner (Zhao & Adler 1993)

Distribution: China (Anhui, Chongqing, Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Zhejiang).

Opisthotropis laui

Gudou Mountain Stream Keelback



2013 Opisthotropis laui Yang, Sung & Chan

Distribution: China (Guangdong).

Opisthotropis maculosa

Yellow-spotted Mountain Stream Keelback


Gulplettet Bjergvandsnog

2007 Opisthotropis maculosus Stuart & Chuaynkern

Remarks: Now restricted to Thailand. Previously included the populations now assigned to haihaensis and hungtai. Records from China and Vietnam refer to these species (Ziegler, Pham, Nguyen, Nguyen, Wang, Wang, Stuart & Le 2019; Wang, Lyu, Zeng, Lin, Yang, Nguyen, Le, Ziegler & Wang 2020).
Distribution: Thailand.

Opisthotropis maxwelli

Fujian Mountain Stream Keelback



1914 Opisthotropis maxwelli Boulenger

Distribution: China (Fujian, Guangdong, Guangxi, Jiangxi, Zhejiang).

Opisthotropis rugosa

Sumatran Mountain Stream Keelback, (Javanese Stream Snake)



1890 Lepidognathus rugosus Lidth de Jeude
Opisthotropis rugosa Boulenger 1891

Distribution: Indonesia (Sumatra).

Opisthotropis shenzhenensis

Shenzhen Mountain Stream Keelback



2017 Opisthotropis shenzhenensis Wang, Guo, Liu, Lyu, Wang, Luo, Sun & Zhang

Distribution: China (Guangdong).

Opisthotropis spenceri

Lampang Mountain Stream Keelback, (Spencer’s Stream Snake, Spencer’s Mountain Keelback)



1918 Opisthotropis spenceri Smith

Distribution: Thailand.

Opisthotropis tamdaoensis

Tam Dao Mountain Stream Keelback


Tam Dao-bjergvandsnog

2008 Opisthotropis tamdaoensis Ziegler, David & Vu
Oligodon tamdaoensis [lapsus?] Nguyen, Ho & Nguyen 2009

Remarks: Closely related to lateralis, but validity confirmed by Ziegler, Ziegler, Peusquens, David, Vu, Pham, Nguyen & Le (2017).
Distribution: Vietnam.

Opisthotropis typica

Dwarf Mountain Stream Keelback, Dwarf Water Snake, Corrugated Water Snake, (Sabah Keelback)



1890 Helicopsoides typicus Mocquard
Opisthotropis typica Boulenger 1891

Distribution: Brunei, Indonesia (Kalimantan), Malaysia (Sabah, Sarawak), Philippines (Palawan).

Opisthotropis voquyi

Bac Giang Mountain Stream Keelback, (Vo Quy's Mountain Stream Keelback)


Bac Giang-bjergvandsnog

2018 Opisthotropis voquyi Ziegler, David, Ziegler, Pham, Nguyen & Le

Distribution: Vietnam.

Opisthotropis zhaoermii

Hunan Mountain Stream Keelback



2017 Opisthotropis zhaoermii Ren, Wang, Jiang, Guo & Li

Distribution: China (Hunan).