• Source: Spilotes pullatus

Spilotes pullatus, commonly known as the chicken snake, tropical chicken snake, or yellow rat snake, is a species of large nonvenomous colubrid snake endemic to the Neotropics.




Taxonomy






= Subspecies

=

Including the nominotypical subspecies, the following five subspecies are recognized:

S. p. pullatus (Linnaeus, 1758)
S. p. anomalepis Bocourt, 1888
S. p. argusiformis Amaral, 1929
S. p. maculatus Amaral, 1929
S. p. mexicanus (Laurenti, 1768)




Geographic range


It is found in southern Mexico, Central America, northern and central South America, and Trinidad and Tobago in the Caribbean.




Description


Adults may attain a maximum total length of 2.7 m (8.9 ft).
Dorsally, S. pullatus is black with yellow spots which may form crossbands. The tip of the snout is yellow. The head shields may be mostly yellow, or mostly black, or crossbanded with a combination of yellow and black, but the sutures between the shields are always black. Ventrally, it is yellow with irregular black crossbands.
The body is relatively slender and somewhat laterally compressed. The head is distinct from the neck. The eye is moderate in size with a round pupil. There are no suboculars, and the loreal is either very small or absent. There are 6 or 7 upper labials, the 3rd and 4th entering the eye, the last two very large. The dorsal scales are pointed and overlapping.
The dorsal scales are arranged in 16 (or 14) rows at midbody. Ventrals 198-232; anal plate entire; subcaudals 90-120, divided.




Habitat


It tends to inhabit forested areas, and is often found near water.




Behavior


It is mainly arboreal, but also terrestrial. It is diurnal and an active forager.




Diet


It feeds on a wide variety of prey, including small mammals (such as rodents and bats), birds, lizards, other reptiles, amphibians, and eggs.




References






Further reading


Boos, Hans E.A. (2001). The Snakes of Trinidad and Tobago. Texas A & M University Press, College Station, Texas. pp. 1–328. ISBN 1-58544-116-3.
Freiberg, M. 1982. Snakes of South America. T.F.H. Publications. Hong Kong. 189 pp. ISBN 0-87666-912-7. (Spilotes pullatus, pp. 110, 140 + photograph on p. 154.)
Linnaeus, C. 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio Decima, Reformata. L. Salvius. Stockholm. 824 pp. (Coluber pullatus, p. 225.)




External links


Media related to Spilotes pullatus at Wikimedia Commons
Data related to Spilotes pullatus at Wikispecies

Kata Kunci Pencarian:

• Sisik ular
• Spilotes pullatus
• Spilotes
• List of largest snakes
• List of reptiles of Mexico
• List of largest reptiles
• Snake venom
• Chicken snake
• Snake scale
• List of reptiles of Guatemala
• List of snakes of Trinidad and Tobago