Trimerodytes is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to East Asia and Southeast Asia.
Species The genus Trimerodytes contains 7 species which are recognized as being valid. Trimerodytes aequifasciatus – Asiatic annulate keelback, Asiatic water snake Trimerodytes annularis – red-bellied annulate keelback, ringed water snake Trimerodytes balteatus – Hainan mountain keelback Trimerodytes percarinatus – eastern water snake, olive keelback, olive annulate keelback, Chinese keelback water snake Trimerodytes praemaxillaris – Angel's mountain keelback, brown stream snake Trimerodytes yapingi – Jingdong water snake Trimerodytes yunnanensis – 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.
References
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).