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Enulius roatanensis MCCRANIE & KÖHLER, 1999

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Roatan Long-tailed Snake 
SynonymEnulius roatanensis MCCRANIE & KÖHLER 1999
Enulius roatanensis — MCCRANIE 2015
Enulius roatanensis — WALLACH et al. 2014: 274 
DistributionHonduras (Islas de la Bahia)

Type locality: near Mud Hole Bay (16°20.88’N, 86°32.05’W), less than 10 m elevation, Isla de Roatán, Islas de la Bahía, Honduras.  
Reproductionoviparous 
TypesHolotype: SMF 78515 
DiagnosisDiagnosis: Enulius roatanensis differs from E . bifoveatus in having one apical pit (two in bifoveatus ) and no pale nuchal collar (collar divided or partially divided). The new species differs from E . flavitorques in having fewer ventrals (165 in LSUMZ male and 176 in female holotype in roatanensis versus 166-190 in male and 184-216 in female flavitorques), more male subcaudals (121 in LSUMZ roatanensis versus 100-117 in flavitorques), and by lacking a pale nuchal collar (pale nuchal collar almost always present in Central and South American flavitorques , but absent in Mexican specimens). Enulius roatanensis is distinguished from E. oligostichus in having 17 scale rows at midbody (15 in oligostichus), seven supralabials (five), third and fourth supralabials entering orbit (second and third), 1 + 2 temporals (1 + 1), 165 ventrals in LSUMZ male and 176 in female holotype (150-157 and 163, respectively), and 121 subcaudals in LSUMZ male and 103 in female holotype (82-88 and 83, respectively). 
Comment 
EtymologyNamed after Roatán island where the species occurs. 
References
  • Hedges SB, Powell R, Henderson RW, Hanson S, and Murphy JC 2019. Definition of the Caribbean Islands biogeographic region, with checklist and recommendations for standardized common names of amphibians and reptiles. Caribbean Herpetology 67: 1–53
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • McCranie J R 2011. The snakes of Honduras. SSAR, Salt Lake City, 725 pp.
  • Mccranie, J. R. & G. KÖHLER 1999. Two new species of colubrid snakes of the genus Enulius from Islas de la Bahia, Honduras. Carib. J. Sci. 35 (1-2): 14-22
  • McCranie, James R. 2015. A checklist of the amphibians and reptiles of Honduras, with additions, comments on taxonomy, some recent taxonomic decisions, and areas of further studies needed. Zootaxa 3931 (3): 352–386 - get paper here
  • Solís, J. M., L. D. Wilson, and J. H. Townsend. 2014. An updated list of the amphibians and reptiles of Honduras, with comments on their nomenclature. Mesoamerican Herpetology 1: 123–144 - 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.
 
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