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Mixcoatlus browni (SHREVE, 1938)

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Brown’s Montane Pit Viper 
SynonymAgkistrodon browni SHREVE 1938
Mixcoatlus browni — JADIN et al. 2011
Mixcoatlus browni — WALLACH et al. 2014: 457 
DistributionSW Mexico (Guerrero), elevation 1,826 to 3,296 m

Type locality: Omilteme, Guerrero, Mexico.  
Reproductionviviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: MCZ R-42678 
Diagnosis 
CommentVenomous!

Synonymy: SMITH 1941 synoymized Agkistrodon browni SHREVE 1938 with Cerrophidion barbouri; JADIN et al. 2011 resurrected A. browni.

Type species: Agkistrodon browni SHREVE 1938 is the type species of the genus Mixcoatlus JADIN, SMITH & CAMPBELL 2011.

Habitat: terrestrial 
EtymologyNamed after the collector of the types, Mr Wilmot W. Brown.

Etymology (genus): The generic name is derived from the Náhuatl word Mixcoatl, meaning ‘cloud serpent,’ a god of the Aztecs and several Mesoamerican civilizations. The name alludes to the restriction of this clade to high elevations. The gender of this name is masculine. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Grünwald, Christoph I.; Jason M. Jones, Hector Franz-Chávez, and Iván T. Ahumada-Carrillo 2015. A new species of Ophryacus (Serpentes: Viperidae: Crotalinae) from eastern Mexico, with commentson the taxonomy of related pitvipers. Mesoamerican Herpetology 2 (4): 388 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Jadin RC, Mihaljevic JR, Orlofske SA. 2019. Do New World pitvipers “scale‐down” at high elevations? Macroecological patterns of scale characters and body size. Ecol Evol. 00:1–14 - get paper here
  • JADIN, ROBERT C.; ERIC N. SMITH and JONATHAN A. CAMPBELL 2011. Unravelling a tangle of Mexican serpents: a systematic revision of highland pitvipers. Zoological Journal of the Linnean Society 163: 943–958 - get paper here
  • OLIVEIRA-DALLAND, LUIS G.; LAURA R.V. ALENCAR, LEANDRO R. TAMBOSI, PAOLA A. CARRASCO, RHETT M. RAUTSAW, JESUS SIGALA-RODRIGUEZ, GUSTAVO SCROCCHI & MARCIO MARTINS. 2022. Conservation gaps for Neotropical vipers: Mismatches between protected areas, species richness and evolutionary distinctiveness. Biological Conservation 275(109750). - get paper here
  • Palacios-Aguilar, Ricardo & OSCAR FLORES-VILLELA 2018. An updated checklist of the herpetofauna from Guerrero, Mexico. Zootaxa 4422 (1): 1-24 - get paper here
  • Shreve, B. 1938. A new Agkistrodon from Mexico. Copeia 1938 (1): 9 - get paper here
  • 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.
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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