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Arrhyton taeniatum GÜNTHER, 1858

IUCN Red List - Arrhyton taeniatum - Least Concern, LC
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Higher TaxaColubridae (Dipsadinae), Alsophiini, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Broad-striped Racerlet, Günther's Island Racer 
SynonymArrhyton taeniatum GÜNTHER 1858: 244
Colorhogia redimita COPE 1862: 81
Arrhyton fulvum COPE 1862: 82
Arrhyton taeniatum — SCHWARTZ & HENDERSON 1991: 589
Arrhyton taeniatum — CROTHER 1999
Arrhyton taeniatum — ZAHER et al. 2009
Arrhyton taeniatum — WALLACH et al. 2014: 56
Arrhyton taeniatum — DÍAZ et al. 2021 
DistributionCuba, Isla de la Juventud

Type locality: Cuba.  
Reproductionoviparous 
TypesHolotype: BMNH 1946.1.21.48.
Holotype: USNM 29769 [Colorhogia dedimita]
Holotype: USNM 12421 [Arrhyton fulvum] 
DiagnosisDiagnosis (genus): The single genus in this subtribe has 17 midbody scale rows, 107–189 ventrals, 52–140 subcaudals, one apical scale pits, 6–7 upper labials, 7–9 lower labials, 15-20 total maxillary teeth, and 20-28 dentary teeth (Table 2). It can be distinguished from the other two subtribes in the Tribe Alsophiini by its low number of dentary teeth (10–17 versus 17–35 in Alsophiina and Uromacerina) and a derived hemipenial character: the medial papillate crest extends from the lobular crotch to the edge of the capitulum on each lobe, and forms a Y-shaped structure on the distal region of the body (Zaher 1999). HEDGES et al. (2009) defined a subtribe Arrhytonina that is identical to the genus Arrhyton. 
CommentFor illustrations see Barbour and Ramsden, 1919; Grant, Smith, and Dalmau, 1959; Schwartz, 1965; Schwartz and Garrido, 1981.

A. taeniatum is the only species in Cuba that lacks a loreal.

Type species: Arrhyton taeniatum is the type species of the genus Arrhyton GÜNTHER 1858.

Distribution: see map in Díaz et al. 2021: Fig. 5. 
References
  • Amaro-Valdés, Seriocha and Ernesto Morell-Savall 2017. First notes on reproduction of Cuban snakes in the endemic genus Arrhyton Günther 1858 (Squamata: Dipsadidae). IRCF Reptiles & Amphibians 24 (1): 47–50 - get paper here
  • Barbour, T. and C. T. Ramsden. 1919. The herpetology of Cuba. Mem. Mus. Comp. Zool., Harvard Coll. 47: 69-213. - get paper here
  • CABALLERO, DAYLON FUNDORA & ÁNGEL ARIAS BARRETO 2021. Nuevas adiciones a la herpetofauna del Refugio de Fauna Loma de Cunagua, Ciego de Ávila, Cuba. Poeyana (512): 1–4. - get paper here
  • 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
  • González, Adonis and Manuel Iturriaga. 2014. Geographical Distribution: Arrhyton taeniatum. Herpetological Review 45 (4): 663 - get paper here
  • Grant, C.,Smith, H.M., and (Alayo) Dalmau, P. 1959. The status of snakes of the genus Arrhyton in Cuba. Herpetologica 15 (3): 129-33. - get paper here
  • Günther, A. 1858. Catalogue of Colubrine snakes of the British Museum. London, I - XVI, 1 - 281 - get paper here
  • Maglio, Vincent J. 1970. West Indian Xenodontine colubrid snakes: Their probable origin, phylogeny, and zoogeography. Bull. Mus. Comp. Zool. Harvard 141 (1): 1-54 - get paper here
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - 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. 1965. A review of the colubrid snake genus Arrhyton with a description of a new subspecies from southern Oriente Province, Cuba. Proc. Biol. Soc. Washington 78: 99-113. - 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. - 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.
  • 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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