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Hypsiglena tanzeri DIXON & LIEB, 1972

IUCN Red List - Hypsiglena tanzeri - Data Deficient, DD

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Common NamesRio Verde Nightsnake, Tanzer's Night Snake 
SynonymHypsiglena tanzeri DIXON & LIEB 1972
Hypsiglena tanzeri — LINER 1994
Hypsiglena tanzeri — LINER 2007
Hypsiglena tanzeri — MULCAHY 2008
Hypsiglena tanzeri — WALLACH et al. 2014: 343 
DistributionMexico (San Luis Potosí, Queretaro, Hidalgo)

Type locality: "5 km E. Jalpan, Querétaro, Mexico, 762 m, 99˚ 27'W., 21˚ 13'N." Map legend:
Type locality - Type locality.
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
TypesHolotype: TCWC 34079, a 328 mm male (F. Guyer, 13 April 1971). 
CommentDiet: mostly specialized on lizards

Behavior: nocturnal 
EtymologyThis species was described in honor of Ernest C. Tanzer, a young herpetology student who began working on this genus in 1965, but died unexpectedly in 1971. 
  • Dixon, James R. & Lieb, Carl S. 1972. A new night snake from Mexico (Serpentes: Colubridae). Contr. Sci. (222): 1-7
  • Dixon, James R. and Julio A. Lemos-Espinal 2010. Amphibians and reptiles of the state of Queretaro, Mexico. Tlalnepantla UNAM, 428 pp.
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Lemos-Espinal, Julio A. and James R. Dixon 2013. Amphibians and Reptiles of San Luis Potosí. Eagle Mountain Publishing, xii + 300 pp.
  • Liner, Ernest A. 2007. A CHECKLIST OF THE AMPHIBIANS AND REPTILES OF MEXICO. Louisiana State University Occasional Papers of the Museum of Natural Science 80: 1-60 - get paper here
  • Morales-Capellán, Nallely, Leonardo-Fernández-Badillo, Adriana López-Mejía, Guillermo Sánchez-Martínez and Irene Goyenechea. 2016. Confirmation of the night snake Hypsiglena tanzeri in Hidalgo, Mexico, and a new record for Reserva de la Biósfera de la Barranca de Metztitlán. Mesoamerican Herpetology 3(4): 1097–1100 - get paper here
  • Mulcahy DG, Martínez-Gómez JE, Aguirre-León G, Cervantes-Pasqualli JA, Zug GR 2014. Rediscovery of an Endemic Vertebrate from the Remote Islas Revillagigedo in the Eastern Pacific Ocean: The Clarión Nightsnake Lost and Found. PLoS ONE 9(5): e97682. doi:10.1371/journal.pone.0097682 - get paper here
  • Mulcahy, Daniel G. 2008. Phylogeography and species boundaries of the western North American Nightsnake (Hypsiglena torquata): Revisiting the subspecies concept. Molecular Phylogenetics and Evolution 46 (3): 1095-1115 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
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