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 Collorhabdium Biodiversity of the family Colubridae Genus Collorhabdium Mountain Dwarf Snake Berg-Zwergnatter Bjerg-dværgsnog 1932 Collorhabdium Smedley (type species: Collorhabdium williamsoni Smedley 1932) Contents: 1 species, which is endemic. Endemism: 0% 100% Distribution: As for the single species. Collorhabdium williamsoni Mountain Dwarf Snake, (Williamson's Reed Snake) Berg-Zwergnatter Bjerg-dværgsnog 1932 Collorhabdium williamsoni Smedley Distribution: Malaysia (West Malaysia).