Rhabdophis nuchalis nuchalis (Boulenger, 1891)
Grooved-neck Keelback 頸槽游蛇
(Probably Non-venomous)
Rhabdophis nuchalis
Order
Suborder		 Squamata 有鱗目
Serpentes 蛇亞目
Family Colubridae 游蛇科
Genus Rhabdophis 頸槽蛇屬
Species Rhabdophis nuchalis nuchalis
Other name Hubei Keelback
Chinese name 頸槽蛇指名亞種, 頸槽蛇
Total length Up to 76 cm.
Description Back brown in colour, may has fine dark spots.
Ventrals uniformly dark brown.
Head brown, with a small black mark below each eye.
Juveniles with a white V-shaped marking just behind the head.
A distinct dorsal groove in middle of neck.
Upper labials cream colour, with one or two dark spots.
Tail rather short. Scales weakly keeled.
Habitat

Live in high altitude in Hong Kong. Locally only known from a single dead specimen found on top of Tai Mo Shan.
The habitat in this area consists of abundant boulders and dwarf bamboo as well as tall grasses. Probably also lives in the adjacent forest.
Behaviour Reported to be diurnal.
Diet Is reported to feed on earthworms and slugs.
Reproduction Oviparous. Is reported to lay 9-19 eggs at a time.
Distribution In Hong Kong, the only record is based on a dead young specimen found near the summit of Tai Mo Shan in 1986.
Occurs in central and southern China, Burma and northern Vietnam.
Conservation Status IUCN Redlist: NE (Not Evaluated)
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