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Pseudelaphe phaescens (DOWLING, 1952)

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Higher TaxaColubridae, Colubrinae, Lampropeltini, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Yucatan Rat Snake
S: Ratonera del Yucateca 
SynonymElaphe flavirufa phaescens DOWLING 1952: 7
Elaphe flavirufa phaescens — KLUGE 1984
Elaphe phaescens — LINER 1994
Pseudoelaphe phaescens — FLORES-VILLELA & CANSECO-MÁRQUEZ 2004
Pseudoelaphe phaescens — HEIMES 2016: 138 
DistributionMexico (Yucatan, Campeche, Quintana Roo)

Type locality: Yucatan, Vallodolid, Chichén Itzá  
TypesHolotype: UMMZ 73074; paratypes: UMMZ, MCZ, USNM 
DiagnosisDiagnosis: “This subspecies may be distinguished from the other three subspecies by a smaller number of dorsal blotches, fewer caudals, and a larger number of scale rows on the anterior and posterior parts of the body.” (Dowling 1952) 
  • Dowling, H. G. 1952. A taxonomic study of the ratsnakes, genus Elaphe Fitzinger, II. The subspecies of Elaphe flavirufa (Cope). Occ. Pap. Mus. Zool. Univ. Michigan 540: 1-14. - get paper here
  • Flores-Villela, O. & Canseco-Márquez, L. 2004. Nuevas especies y cambios taxonómicos para la herpetofauna de México. Acta Zoologica Mexicana (n.s.) 20 (2): 115-144 - get paper here
  • González-Sánchez, V. H., J. D. Johnson, E. García-Padilla, V. Mata-Silva, D. L. DeSantis and L. D. Wilson. 2017. The Herpetofauna of the Mexican Yucatan Peninsula: composition, distribution, and conservation status. Mesoamerican Herpetology 4(2): 264–380 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Kluge, Arnold G. 1984. Type-specimens of reptiles in the University of Michigan Museum of Zoology. [type catalogue] Miscellaneous publications, Museum of Zoology, University of Michigan (167): 1-85 - get paper here
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • Liner, E.A. 1994. Scientific and common names for the Amphibians and Reptiles of Mexico in English and Spanish. Herpetological Circular 23: 1-113
  • Nahuat-Cervera, Pedro Enrique 2020. Amphibians and reptiles of the Hobonil Educative Center, Tzucacab, Yucatán, Mexico. Rev. Latinoamer. Herp. 3 (1): 53-65 - get paper here
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