title: A new species of earth snake (Dipsadidae, Geophis) from Mexico.
abstract: A new species of the Geophis dubius group is described from the mountains of the Sierra Zongolica in west-central Veracruz and the Sierra de Quimixtlán in central-east Puebla. The new species is most similar to Geophis duellmani and Geophis turbidus, which are endemic to the mountains of northern Oaxaca and the Sierra Madre Oriental of Puebla and Hidalgo, respectively. However, the new species differs from Geophis duellmani by the presence of postocular and supraocular scales and from Geophis turbidus by having a bicolor dorsum. With the description of the new species, the species number in the genus increases to 50 and to 12 in the Geophis dubius group. Additionally, a key to the species of the Geophis dubius group is provided.
authors: Museo de Zoología and Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Cd. Universitaria, Del. Coyoacán, Mexico 04510, Ciudad de México, Mexico.
authors: Luis
authors: L
authors: Canseco-Márquez
authors: Museo de Zoología and Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Cd. Universitaria, Del. Coyoacán, Mexico 04510, Ciudad de México, Mexico.
authors: Carlos J
authors: CJ
authors: Pavón-Vázquez
authors: División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, km 0.5 carretera Villahermosa-Cárdenas, entronque con Bosques de Saloya, Villahermosa, Tabasco, Mexico.
authors: Marco Antonio
authors: MA
authors: López-Luna
authors: Museo de Zoología and Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Cd. Universitaria, Del. Coyoacán, Mexico 04510, Ciudad de México, Mexico.
authors: Adrián
authors: A
authors: Nieto-Montes de Oca
keywords: Dipsadidae; Geophis dubius group; Geophis duellmani; Geophis turbidus; Mexico; New species; Puebla; Veracruz