• Source: Arrhyton

Arrhyton is a genus of New World snakes, commonly known as island racers or racerlets, in the subfamily Dipsadinae of the family Colubridae. The genus contains nine described species.




Description


Snakes of the genus Arrhyton share the following characters. The maxillary bone is short, with eight small teeth, which are followed, after a large interspace by a strongly enlarged fang. The mandibular teeth are small and equal. The head is slightly distinct from the neck. The eye is rather small, with a round pupil. The body is cylindrical in cross-section. The dorsal scales are smooth, without apical pits, and are arranged in 15 or 17 rows. The ventrals are rounded. The tail is moderately long. The subcaudals are in two rows.: 251 




Geographic range


Species in the genus Arrhyton are found in Cuba, Jamaica, Puerto Rico, and the British Virgin Islands.




Species


The following species are recognized as being valid.

Arrhyton ainictum Schwartz & Garrido, 1981 – Cuban island racer
Arrhyton albicollum Díaz, Fong, Salas & Hedges, 2021 – Gibara white-collared racerlet
Arrhyton dolichura F. Werner, 1909 – Habana island racer
Arrhyton procerum Hedges & Garrido, 1992 – Zapata long-tailed groundsnake
Arrhyton redimitum (Cope, 1862) – Oriente brown-capped racerlet
Arrhyton supernum Hedges & Garrido, 1992 – Oriente black groundsnake
Arrhyton taeniatum Günther, 1858 – Günther's island racer
Arrhyton tanyplectum Schwartz & Garrido, 1981 – San Vincente island racer
Arrhyton vittatum (Gundlach, 1861) – common island racer
Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Arrhyton.




References






Further reading


Günther A (1858). Catalogue of Colubrine Snakes in the Collection of the British Museum. London: Trustees of the British Museum. (Taylor and Francis, printers). xvi + 281 pp. (Arrhyton, new genus, p. 240, 244).
Schwartz A, Thomas R (1975). A Check-list of West Indian Amphibians and Reptiles. Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (Arrhyton dolichurum, p. 177; A. taeniatum, p. 178; A. vittatum, pp. 178–179).

Kata Kunci Pencarian:

• Dipsadinae
• Arrhyton
• Arrhyton redimitum
• Arrhyton procerum
• Arrhyton tanyplectum
• Arrhyton taeniatum
• Arrhyton vittatum
• Arrhyton dolichura
• Arrhyton ainictum
• Arrhyton albicollum
• Arrhyton supernum