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Geophis nasalis (COPE, 1868)

IUCN Red List - Geophis nasalis - Least Concern, LC
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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Coffee Earth Snake
S: Minadora de Parda 
SynonymCatostoma nasale COPE 1868: 131
Elapoides Sieboldi — MÜLLER 1882: 142
R(habdosoma) nasale — COPE 1885: 385
Catostoma chalybeum — SLEVIN 1939: 404
Geophis nasalis — SMITH 1941: 4
Geophis nasalis — DOWNS 1967: 160
Geophis nasalis — PETERS & OREJAS-MIRANDA 1970: 120
Catastoma nasale — MALNATE 1971: 369 (in error)
Geophis nasalis — VILLA et al. 1988
Geophis nasalis — LINER 1994
Geophis nasalis — WILSON & TOWNSEND 2007: 14
Geophis nasalis — WALLACH et al. 2014: 303
Geophis nasalis — BARRAGAN-RESÉNDIZ et al. 2022 
DistributionMexico (Chiapas), Guatemala, 600-1500 m elevation.

Type locality: Near Guatemala City.  
Reproductionoviparous 
TypesLectotype: ANSP 3320, an adult female, designated by Downs (1967: 160); paralectotypes: ANSP 3319-21, USNM 12425A (Academy of Natural Sciences of Philadelphia and National Museum of Natural History), collected by Van Patten. 
DiagnosisDiagnosis (n=326): Distinguished from other members of the genus by the combination of (1) dorsal scales in 17 rows, distinctly keeled except on neck; (2) no anterior temporal; (3) combined length of pre- and postnasal distinctly less than that of loreal; (4) sum of ventrals and subcaudals 142-172; (5) dorsum brown or gray; and (6) ventrals light, not strongly banded. (Downs 1967: 161)


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CommentDistribution: see map in BARRAGAN-RESÉNDIZ et al. 2022: 273 (Fig. 5) 
EtymologyNamed after Latin nasalis, pertaining to the nose. [“... It also differs much from the same in the elongated form of the head...”]. 
References
  • Barragán-Reséndiz, Lesly Montserrat, Pavón-Vázquez, Carlos J., Cervantes-Burgos, Romina Itzel, Trujano-Ortega, Marysol, Canseco-Márquez, Luis, et al. 2022. A New Species of Snake of the Geophis sieboldi Group (Squamata: Dipsadidae) from Estado de México, Mexico. Herpetologica 78 (4): 268-276 - get paper here
  • Castillo-Cabrera, F. J., Roldán, R. A., Barrios, M., Burgos-Barrios, C. L., Grajeda, A. L., García, M. J., ... & Orellana, K. S. 2025. Contribution to the knowledge of urban biodiversity in Central America: A checklist to the species of Guatemala City. Neotropical Biology and Conservation, 20(1), 59-66 - get paper here
  • Cope, E.D. 1868. An examination of the Reptilia and Batrachia obtained by the Orton Expedition to Equador and the Upper Amazon, with notes on other species. Proc. Acad. Nat. Sci. Philadelphia 20: 96-140 - get paper here
  • Cope, E.D. 1885. A contribution to the herpetology of Mexico. Proc. Amer. Philos. Soc. 22: 379-404 - get paper here
  • Downs, F. L. 1967. lntrageneric relations among colubrid snakes of the genus Geophis Wagler. Misc. Publ. Mus. Zool. Univ. Michigan 131: 1-193. - get paper here
  • Guerra Centeno, Dennis; Héctor Fuentes Rousselin & David Morán Villatoro 2012. Serpientes de Guatemala: Guía para didentificación de especies. Universidad de San Carlos de Guatemala, 186 pp.
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Johnson, Jerry D.; Vicente Mata-Silva, Elí García Padilla, and Larry David Wilson 2015. The Herpetofauna of Chiapas, Mexico: composition, distribution, and conservation. Mesoamerican Herpetology 2 (3): 272–329. - get paper here
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • Lips K R. Savage J M. 1994. A new fossorial snake of the genus Geophis (Reptilia: Serpentes: Colubridae) from the Cordillera de Talamanca of Costa Rica. Proc. Biol. Soc. Washington 107 (2): 410-416. - get paper here
  • Livezey, R. L.;Peckham, R. S. 1953. Some snakes from San Marcos, Guatemala. Herpetologica 8: 175-177 - get paper here
  • Malnate, Edmond V. 1971. A catalogue of primary types in the Herpetological Collections of the Academy of Natural Sciences, Philadelphia (ANSP). Proccedings of the Academy of Natural Sciences of Philadelphia 123 (9): 345-375 - get paper here
  • Müller, F. 1880. Erster Nachtrag zum Katalog der herpetologischen Sammlung des Basler Museums. Verh. Naturf. Ges. Basel 7: 120-165 - get paper here
  • Peters, James A.; Donoso-Barros, Roberto & Orejas-Miranda, Braulio 1970. Catalogue of the Neotropical Squamata: Part I Snakes. Bull. US Natl. Mus. 297: 347 pp. - get paper here
  • Slevin, Joseph Richard 1939. Notes on a collection of reptiles and amphibians from Guatemala I. Snakes. Proc. Cal. Acad. Sci. 23 (26): 393-414 - get paper here
  • Villa, J., Wilson, L.D., Johnson, J.D. 1988. Middle American Herpetology - A Bibliographic Checklist. University of Missouri Press, 132 pp [review in Copeia 1989 (3): 802]
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • WILSON, L.D. & J.H. TOWNSEND 2007. A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation. Zootaxa 1395: 1-31 - get paper here
 
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