Home - Taxonomy - Geography - Biodiversity - Literature - Purchase RepFocus Recent updates 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 Isanophis Biodiversity of the family Colubridae Genus Isanophis Isan Keeled Stream Snake Isan-Gebirgswassernatter Thailandsk Flodsnog 2015 Isanophis David, Pauwels, Nguyen & Vogel (type species: Parahelicops boonsongi Taylor & Elbel 1958) Contents: 1 species, which is endemic. Endemism: 0% 100% Distribution: As for the single species. Isanophis boonsongi Isan Keeled Stream Snake, (Boonsong’s Stream Snake, Boonsong’s Keelback) Isan-Gebirgswassernatter Thailandsk Flodsnog 1958 Parahelicops boonsongi Taylor & Elbel Opisthotropis boonsongi Smith 1943 Isanophis boonsongi David, Pauwels, Nguyen & Vogel 2015 Distribution: Thailand.