Trimerodytes

Trimerodytes is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to East Asia and Southeast Asia.

Trimerodytes
Trimerodytes percarinatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Colubridae
Subfamily:	Natricinae
Genus:	Trimerodytes Cope, 1895
Synonyms
Sinonatrix

Species

The genus Trimerodytes contains 7 species which are recognized as being valid.

• Trimerodytes aequifasciatus (Barbour, 1908) – Asiatic annulate keelback, Asiatic water snake
• Trimerodytes annularis (Hallowell, 1856) – red-bellied annulate keelback, ringed water snake
• Trimerodytes balteatus Cope, 1895 – Hainan mountain keelback
• Trimerodytes percarinatus (Boulenger, 1899) – eastern water snake, olive keelback, olive annulate keelback, Chinese keelback water snake
• Trimerodytes praemaxillaris (Angel, 1929) – Angel's mountain keelback, brown stream snake
• Trimerodytes yapingi (Guo, Zhu & Liu, 2019) – Jingdong water snake
• Trimerodytes yunnanensis (Rao & Yang, 1998) – Yunnan water snake, Yunnan annulate keelback

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Trimerodytes.

Further reading

• Rossman, Douglas A.; Eberle, W. Gary (1977). "Partition of the Genus Natrix, with Preliminary Observations on Evolutionary Trends in Natricine Snakes". Herpetologica 33 (1): 34–43. (Sinonatrix, new genus).