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Arrhyton tanyplectum SCHWARTZ & GARRIDO, 1981

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Higher TaxaColubridae (Dipsadinae), Alsophiini, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Guaniguanico Racerlet, San Vincente Island Racer 
SynonymArrhyton tanyplectum SCHWARTZ & GARRIDO 1981: 221
Arrhyton tanyplectum — SCHWARTZ & HENDERSON 1991: 590
Arrhyton tanyplectum — CROTHER 1999
Arrhyton tanyplectum — ZAHER et al. 2009
Arrhyton tanyplectum — WALLACH et al. 2014: 56
Arrhyton tanyplectum — DÍAZ et al. 2021 
DistributionCuba

Type locality: Cliffs at San Vicente, Pinar del Rio Province, Cuba.  
Reproductionoviparous 
TypesHolotype: AMNH 77782. 
DiagnosisDESCRIPTION: Maximum SVL 306 mm; ventrals 145-146 in males; 141 in female; subcaudals 131-132 in males, 121 in female; ventrals + subcaudals 277-279 in males,262 in female; dorsal scale rows at midbody 17; supralabials 6-7; infralabials 8-9; preoculars 1/1; postoculars 2/2; loreals 1/1; rostral slight!y upturned; head neither conspicuously flattened nor broad; anal divided. Dorsal pattern a series of 3 dark brown lines on brown ground; lateral lines on scale rows 3 and 4; median dorsal line continues boldly to tail tip; dorsal scales dark-edged giving a "braided" appearance (most pronounced on tail); lineate pattern prominent in juveniles and adults; head without distinct cap; upper surface of head suffused with darker brown, this color reaching as far laterally as poorly defined loreopostocular line, not separated from dorsal head color, and concolor with it; venter immaculate pale yellow, but mental and first 1 to 4 infralabials with dark stippling or blotching (Schwartz & Henderson 1991: 590). 
CommentFor illustrations see Schwartz and Garrido, 1981.

Distribution: see map in Díaz et al. 2021: Fig. 5. 
References
  • Crother, Brian I. 1999. PHYLOGENETIC RELATIONSHIPS AMONG WEST INDIAN XENODONTINE SNAKES (SERPENTES; COLUBRIDAE) WITH COMMENTS ON THE PHYLOGENY OF SOME MAINLAND XENODONTINES. Contemporary Herpetology 2 - get paper here
  • DÍAZ, L. M., FONG G., A., SALAS, D., & HEDGES, S. B. 2021. A new semifossorial snake of the genus Arrhyton (Squamata: Dipsadidae) from eastern Cuba, with taxonomic comments on other species. Zootaxa, 5052 (3): 406-418 - get paper here
  • Rodríguez Schettino, Lourdes, Carlos A. Mancina & Vilma Rivalta González 2013. REPTILES OF CUBA: CHECKLIST AND GEOGRAPHIC DISTRIBUTIONS. Smithsonian Herp. Inf. Serv. (144): 1-96 - get paper here
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
  • Schwartz, A. and O. H. Garrido. 1981. A review of the Cuban members of the genus Arrhyton (Reptilia, Serpentes, Colubridae). Annals of the Carnegie Museum 50: 207-230.
  • 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.
  • Zaher, Hussam; Grazziotin, Felipe Gobbi; Cadle, John E.; Murphy, Robert W.; Moura-Leite, Julio Cesar de; Bonatto, Sandro L 2009. Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American Xenodontines: a revised classification and descriptions of new taxa. Pap. Avulsos Zool. (São Paulo) 49 (11): 115-153 - get paper here
 
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