Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.
 
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Genus
Trimerodytes
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Asian Water Snakes
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Asiatische Schwimmnattern
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Indokinesiske Vandsnoge
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1895 |  |
Trimerodytes Trimerodytes balteatus (type species: Trimerodytes balteatus Cope 1895) |
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1929 | |
Paratapinophis Angel (type species: Paratapinophis premaxillaris Angel 1929; syn. Deepak, Cooper, Poyarkov, Kraus, Burin, Das, Narayanan, Streicher, Smith & Gower 2022) |
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1977 | |
Sinonatrix Rossman & Eberle (type species: Tropidonotus annularis Hallowell 1856; syn. Ren, Wang, Guo, Wang, Nguyen & Li 2019) |
Contents:
7 species, of which 1 (14.3%) is endemic.
Endemism: 0%  100%
Remarks:
The species of this genus were previously included in
Natrix,
then assigned to a separate genus, Sinonatrix (Rossman & Eberle 1977), however, the latter name was subsequently shown to be a synonym of Trimerodytes.
When revalidating Trimerodytes, the authors added another species, balteatus, formerly assigned to
Opisthotropis.
Paratapinophis was previously regarded as a synonym of
Opisthotropis (e.g., Pope 1935; Cox 1991),
but revalidated by Murphy, Chan-ard, Mekchai, Cota & Voris (2008), however, the validity was questioned by Ren, Wang, Guo, Wang, Nguyen & Li (2019).
Most recently, Deepak, Cooper, Poyarkov, Kraus, Burin, Das, Narayanan, Streicher, Smith & Gower (2022) synonymized Paratapinophis with Trimerodytes.
Distribution:
E. Asia.
Reported from:
China
(Anhui,
Chongqing,
Fujian,
Gansu,
Guangdong,
Guangxi,
Guizhou,
Hainan,
Hebei,
Henan,
Hong Kong,
Hubei,
Hunan,
Jiangsu,
Jiangxi,
Shaanxi,
Sichuan,
Yunnan,
Zhejiang),
India
(Arunachal Pradesh),
Laos,
Myanmar,
Taiwan,
Thailand,
Vietnam.
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Trimerodytes aequifasciatus
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Equal-banded Water Snake, Chinese Spotted Keelback, Diamond-backed Water Snake, Blotched Water Snake, (Asian Water Snake)
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Gleichgebänderte Schwimmnatter
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Ensbåndet Vandsnog
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1908 | |
Natrix aequifasciata Barbour |
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Sinonatrix aequifasciata Rossman & Eberle 1977 |
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Trimerodytes aequifasciatus Ren, Wang, Guo, Wang, Nguyen & Li 2019 |
Distribution:
China
(Chongqing,
Fujian,
Guangdong,
Guangxi,
Guizhou,
Hainan,
Hong Kong,
Hunan,
Jiangxi,
Yunnan,
Zhejiang),
Laos,
Vietnam.
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Trimerodytes annularis
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Asian Banded Water Snake, Ringed Keelback, Banded Ground Snake
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Asiatische Gebänderte Schwimmnatter
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Asiatisk Båndet Vandsnog
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1856 | |
Tropidonotus annularis Hallowell |
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Natrix annularis Stejneger 1925 |
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Sinonatrix annularis Rossman & Eberle 1977 |
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Trimerodytes annularis Ren, Wang, Guo, Wang, Nguyen & Li 2019 |
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1859 | |
Tropidonotus chinensis Jan in Berthold (Böhme 2010) |
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1859 | |
Tropidonotus semifasciatus Berthold (Zhao & Adler 1993) |
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1903 | |
Tropidonotus habereri Werner (Zhao & Adler 1993) |
Distribution:
China
(Anhui,
Chongqing,
Fujian,
Guangdong,
Guangxi,
Hainan,
Hebei,
Henan,
Hubei,
Hunan,
Jiangsu,
Jiangxi,
Sichuan,
Yunnan,
Zhejiang),
Taiwan.
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Trimerodytes balteatus
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Banded Mountain Stream Keelback, Hainan Stream Snake, Hainan Mountain Keelback
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Gebänderte Gebirgsflussnatter
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Båndet Bjergvandsnog
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1895 | |
Trimerodytes balteatus Cope |
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Tropidonotus balteatus Boulenger 1896 |
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Opisthotropis balteata Pope 1935 |
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1904 | |
Liparophis Bedoti Peracca (Smith 1943) |
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1931 | |
Opisthotropis multicincta Fan (syn. Ren, Wang, Guo, Wang, Nguyen & Li 2019) |
Remarks:
Reassigned to Trimerodytes by Ren, Wang, Guo, Wang, Nguyen & Li (2019).
David, Pauwels, Nguyen & Vogel (2015) treated multicincta as a separate species (of the genus Opisthotropis), but most other authors have regarded it
as a synonym of balteatus (e.g., Smith 1943; Zhao & Adler 1993; Ren, Wang, Guo, Wang, Nguyen & Li 2019).
An isolated record from Cambodia is likely erroneous (Ren, Wang, Guo, Wang, Nguyen & Li 2019).
Distribution:
China
(Guangdong,
Guangxi,
Hainan,
Hong Kong,
Hunan),
Vietnam.
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Trimerodytes percarinatus
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Chinese Keelback, Mountain Water Snake, Eastern Water Snake, (Boulenger's Water Snake, Olive Keelback)
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Chinesische Schwimmnatter
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Kinesisk Vandsnog
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1899 | |
Tropidonotus percarinatus Boulenger |
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Natrix percarinatus Parker 1923 |
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Natrix annularis percarinata Bourret 1936 |
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Sinonatrix percarinata Rossman & Eberle 1977 |
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Trimerodytes percarinatus Ren, Wang, Guo, Wang, Nguyen & Li 2019 |
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1931 | |
Natrix suriki Maki (David, Cox, Pauwels, Chanhome & Thirakhupt 2004) |
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Sinonatrix percarinata suriki Zhao & Jiang 1986 |
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Sinonatrix suriki Welch 1988 |
Other common names:
suriki: White-stomach Snake
Distribution:
China
(Anhui,
Chongqing,
Fujian,
Gansu,
Guangdong,
Guangxi,
Guizhou,
Hainan,
Henan,
Hong Kong,
Hubei,
Hunan,
Jiangsu,
Jiangxi,
Shaanxi,
Sichuan,
Yunnan,
Zhejiang),
India
(Arunachal Pradesh,
Mizoram),
Laos,
Myanmar,
Taiwan,
Thailand,
Vietnam.
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Trimerodytes praemaxillaris
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Brown Stream Snake, (Angel’s Mountain Keelback)
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Braune Flussnatter
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Brun Flodsnog
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1929 | |
Paratapinophis praemaxillaris Angel |
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Opisthotropis praemaxillaris Pope 1935 |
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Trimerodytes praemaxillaris Deepak, Cooper, Poyarkov, Kraus, Burin, Das, Narayanan, Streicher, Smith & Gower 2022 |
Remarks:
Specific epithet sometimes misspelled premaxillaris (e.g., Mo, Chen & Li 1984).
Distribution:
China
(Yunnan),
Laos,
Thailand.
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Trimerodytes yapingi
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Yaping Keelback
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Yaping-Schwimmnatter
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Yaping-kølsnog
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2019 | |
Sinonatrix yapingi Guo, Zhu & Liu |
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Trimerodytes yapingi Wang, Ren, Chen, Lyu, Guo, Jiang, Chen, Li, Guo, Wang & Che 2020 |
Distribution:
China
(Yunnan),
Laos.
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Trimerodytes yunnanensis
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Yunnan Keelback
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Yunnan-Schwimmnatter
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Yunnan-kølsnog
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1998 | |
Sinonatrix yunnanensis Dinq-Qi & Yang |
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Trimerodytes yunnanensis Ren, Wang, Guo, Wang, Nguyen & Li 2019 |
Remarks:
Validity supported by Guo, Zhu, Liu, Wang, Che & Nguyen (2020).
Distribution:
China
(Yunnan),
Myanmar,
Thailand,
Vietnam.
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