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 Amastridium Biodiversity of the family Colubridae Genus Amastridium Rusty-headed Snakes Rostkopfnattern Rusthovedsnoge 1861 Amastridium Cope (type species: Amastridium veliferum Cope 1861) 1898 Fleischmannia Boettger (type species: Fleischmannia obscura Boettger 1898) 1903 Mimometopon Werner (type species: Mimometopon sapperi Werner 1903) 1905 Phrydops Boulenger (type species: Phrydops melas Boulenger 1905) Contents: 2 species, none of which are endemic. Endemism: 0% 100% Distribution: E. Mexico, Central America, NW. South America. Reported from: Belize, Colombia, Costa Rica, Guatemala, Honduras, Mexico (Chiapas, Hidalgo, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Tabasco, Tamaulipas, Veracruz), Nicaragua, Panama. Amastridium sapperi Northern Rusty-headed Snake, (Sapper's Rusty-headed Snake) Nördliche Rostkopfnatter Nordlig Rusthovedsnog 1903 Mimometopon sapperi Werner Amastridium sapperi Dunn 1925 Amastridium veliferum sapperi Smith 1971 Remarks: Regarded as a synonym or subspecies of veliferum by some authors (e.g., Wilson & Meyer 1969, 1985; Wilson 1988). Retained as a separate species in most recent works (e.g., Savage 2002; Liner 2007; García-Vázquez, Canseco-Márquez, Gutiérrez-Mayén & Trujano-Ortega 2009; Wilson & Johnson 2010; McCranie 2011). Distribution: Belize, Guatemala, Honduras, Mexico (Chiapas, Hidalgo, Nuevo Leon, Oaxaca, Puebla, Queretaro, San Luis Potosi, Tabasco, Tamaulipas, Veracruz). Amastridium veliferum Southern Rusty-headed Snake, Rufous-headed Snake, Ridge-nosed Snake Südliche Rostkopfnatter Sydlig Rusthovedsnog 1861 Amastridium veliferum Cope 1898 Fleischmannia obscura Boettger (Peters & Orejas-Miranda 1970) 1905 Phrydops melas Boulenger (Peters & Orejas-Miranda 1970) Other common names: veliferum: Cope's Rusty-headed Snake Remarks: Previously included sapperi. Records from Mexico south to Honduras refer to sapperi. Distribution: Colombia, Costa Rica, Nicaragua, Panama.