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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: September 28th, 2024.


Expanded account of the family Colubridae
Taxonomy and distribution of the genus Rhadinophis
Bibliography of the genus Rhadinophis
Biodiversity of the family Colubridae



Expanded account of the genus
Rhadinophis

Rein Snake

The genus contains a single species:
Abbreviations
and glossary





Rhadinophis frenatus

Rein Snake
Size: TL 0.80-1.00 m, max. 1.50 m.
Reproduction: Oviparous. 9 eggs per clutch, measuring 28 X 15 mm.
Diet: Lizards (e.g., Takydromus kuehnei), rodents, birds. The prey is killed by constriction.
Habitat: Wet evergreen and broadleaved forests, around shrubs, bamboo, and low trees. Also found in wood piles, rock crevices, and at the edge of agricultural fields.
Altitude range: 200-2800 m ASL.
Habits: Diurnal, arboreal and terrestrial. Tail prehensile. Concave area in front of eyes suggest binocular vision (as in the genus Ahaetulla).
Hibernation: Depending on latitude, a hibernation period of 1-3 months seems likely.
Defense: Appears to be very shy. If approached, the snake holds ground, strikes repeatedly and vibrates the tail. When attempting to pick up a snake, it either rolls up defensively or viciously try to bite. When biting, it often holds on. It may also adopt a defense position by forming the anterior part of the body into a S-shape and slightly inflating the body.
Use and trade: Not included in CITES Appendices. Small numbers of this species appear in the international pet trade.
Conservation: Least Concern (IUCN Red Lists). Justified in view of its wide distribution, presumed large overall population, it occurs in a number of protected areas, has a tolerance of a degree of habitat modification, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category. An uncommon species. The overall population of this very widespread snake is presumed to be stable. No species-specific conservation measures are in place. It is present in many protected areas. Research is needed into population status of this species.
Other notes: Juvenile colouration grey, greyish olive, or brownish. Top of head bluish grey or green. Dark grey transverse bars on back, formed by some scales having dark edges. Top of the head also with black-bordered edges. On the nape, there are some narrow black longitudinal stripes. Labials white with a black dot. Belly with some small black dots. After 1.5 to 2 years, the colouration changes into the adult green.

References: Das 2010 Lang 2017 Li & Lau 2021 Schulz 1996 Whitaker & Captain 2004