Minggu, 24 Mei 2015

Oxyrhopus is a genus of colubrid snakes that belong to the subfamily Xenodontinae. The genus is found in Central America and the northern part of South America, and it includes at least 13 distinct species.



The following 14 species are recognized as being valid.

  • Oxyrhopus clathratus A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854
  • Oxyrhopus doliatus A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854
  • Oxyrhopus erdisii (Barbour, 1913)
  • Oxyrhopus fitzingeri (Tschudi, 1845)
  • Oxyrhopus formosus (Wied-Neuwied, 1820)
  • Oxyrhopus guibei Hoge & Romano, 1977
  • Oxyrhopus leucomelas (F. Werner, 1916)
  • Oxyrhopus marcapatae (Boulenger, 1902)
  • Oxyrhopus melanogenys (Tschudi, 1845)
  • Oxyrhopus occipitalis (Wagler, 1824)
  • Oxyrhopus petolarius (Linnaeus, 1758) - calico snake, culebra-encendida de cálico
  • Oxyrhopus rhombifer A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854
  • Oxyrhopus trigeminus A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854
  • Oxyrhopus vanidicus Lynch, 2009

The former Oxyrhopus venezuelanus Shreve, 1947 is currently considered a synonym of Oxyrhopus doliatus.

Nota bene: In the above list, a binomial authority in parentheses indicates that the species was originally described in a genus other than Oxyrhopus.



Species in the genus Oxyrhopus share the following characters:

Head distinct from neck. Eye moderate or small. Pupil vertically elliptic. Body cylindrical or slightly laterally compressed. Tail moderate or long.

Dorsal scales smooth, with apical pits, and arranged in 19 rows at midbody.

Maxillary teeth 10-15, subequal, followed after a gap by two enlarged grooved teeth, located just behind the posterior border of the eye.



Further reading

  • Freiberg, M. 1982. Snakes of South America. T.F.H. Publications. Hong Kong. 189 pp. ISBN 0-87666-912-7. (Oxyrhopus pp. 78-79, 104-105, 137 + photographs on pp. 135, 138, 190-191.)
  • Wagler, J.[G]. 1830. Natürliches System der Amphibien, mit vorangehender Classification des Säugthiere und Vögel. Ein Beitrag zur vergleichenden Zoologie. J.G. Cotta. Munich, Stuttgart, and Tübingen. vi + 354 pp. (Genus Oxyrhopus, pp. 185-186.)

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