Ahaetulla nasuta Amphiesma stolata Argyrogena fasciolata Banded racer Beer Dev Bergenia ciliata Black Headed Royal Snake Blind Snake Blunt-nosed viper Boiga trigonata Brahminy Worm Snake Braid snake Buff Striped KeelBack | Amphiesma stolatum Calotes versicolor Central Asian Cobra Checkered Keelback CheckeredKeelback Chenab Valley Cobra Common Cat Snake Common Krait| Bungarus caeruleus Common Kukri Common Wolf Snake Conflux Cover Letter Tips Cyrtodactylus himalayanus Daboia russelii Dendrelaphis tristis Dhaman || Rescue Duttaphrynus stomaticus Echis carinatus Egret Elaphe hodgsoni Eryx conicus Eryx johnii Families Flowers Flowers. photography Ganges Gloydius himalayanus Green vine snake Hemidactylus brookii Herpetoreas platyceps Himachal Pradesh Himalayan Bent-toed Gecko Himalayan pit viper Himalayan Ratsnake History Hoplobatrachus tigerinus Indian bullfrog Indian marbled toad Indian python Indian Rat Snake Indian Rat Snake || Rescue III Indian Rat Snake || Rescue IInd Indotyphlops braminus Jan's Cliff racer Kailash Kund (Kablas) Kashmir rock agama Khajuraho Khatron Ke Khiladi Laudakia agrorenisis Laudakia tuberculata Leith's sand snake Lycodon aulicus Macrovipera lebetinus Malabar pit viper Malus pumila Manimahesh : The Jewel bearer Mobile photography Monocled cobra Morchella Myna Naja naja Naja oxiana Nature photographs Oligodon arnensis Oligodon arnensis || Rescue Ophiophagus hannah Photography Pit viper Platyceps rhodorachis Poisnous Psammophis leithii Ptyas mucosa Ptyas mucosa | Rescue Ptyas mucosa || Rescue II Python molurus Red Sand Boa Reptile Rhododendron arboreum Russell's viper Saraswati Snake Bite & First Aid Tips Snake Books Snake World Snakes Snakes & Man Spalerosophis atriceps Sparrow Babies Subaar Nag Surkhanda Devi Temple The Quince: Cydonia oblonga Trimeresurus malabaricus Triveni Sangam Tulips Venomous Viburnum grandiflorum Wolf Snake Yamuna

Kashmir rock agama | Laudakia tuberculata Gray, 1827

Kashmir rock agama | Laudakia tuberculata Gray, 1827   Kashmir rock agama is a species of lizard that belong to family agamidae which i...

Green vine snake | Ahaetulla nasuta (Lacépède, 1789)

Green vine snake is also known as long-nosed whip snake and common vine snake belonging to colubridae family of snakes; it is a slende...

Green vine snake is also known as long-nosed whip snake and common vine snake belonging to colubridae family of snakes; it is a slender tree snake which is green in color. Ahaetulla nasuta is distributed in countries viz., Burma, Bhutan, India, Thailand, Vietnam, Bangladesh, Cambodia and Sri Lanka. There are many other vernacular names used for the species in different regions such as “Pachai paambu” in Tamil and “Shelati snake” in Marathi are among the lots of other vernacular names for the Green vine snake. The species Ahaetulla nasuta sometimes confused with the Oxybelis fulgidus species which is found in Central and South America due to its common name “Green vine snake".  In India the species is protected under schedule-IV of wild life protection act. The term “Ahaetulla” received by the species is due to the false belief that it attacks at the eye, as in Sinhala it means “Eye plucker”.

Scientific classification
Binomial name
Ahaetulla nasuta, Lacépède (1789)
Ahaetulla nasuta is a diurnal species and is mildly venomous. The food of the species mainly contains frogs and lizards that they hunt by using their binocular vision, besides also take other small vertebrates. These are among slow moving serpents which rely on camouflaging. While in threat the snakes expand their body to display a black and white scale marking with this, they may also open their mouth as a warning towards the perceived threat. This is the only snake species having horizontal pupils, comparing to the family of vipers that normal have vertical slit pupils.

Ahaetulla nasuta, (Lacépède 1789)- Image source: Davidvraju (wikipedia)
The species is viviparous in nature which gives birth to young’s that grow inside female’s body, surrounded by egg membrane. They have been considered capable of delaying fertilization as in reports in the London zoo kept a female in isolation from August, 1885 which gave birth in August, 1888.
The taxonomy of vine snakes is not very well acknowledged and literature works also varies widely, but there are around 10 species that are commonly counted under the genus Ahaetulla and those are:  Ahaetulla anomala (Annandale, 1906) - Variable colored vine snake; Ahaetulla dispar (Günther, 1864) - Günther's vine snake or Indian bronze back; Ahaetulla fasciolata (Fischer, 1885) - Speckle-headed whipsnake; Ahaetulla fronticincta (Günther, 1858) -Burmese vine snake; Ahaetulla laudankia, Deepak, Narayanan, Sarkar, Dutta & Mohapatra, 2019 - Laudankia vine snake;  Ahaetulla mycterizans (Linnaeus, 1758) - Malayan green whip snake; Ahaetulla nasuta (Lacépède, 1789) - Long-nosed whip snake; Ahaetulla perroteti (Duméril & Bibron, 1854) - Western Ghats bronze back; Ahaetulla pulverulenta (Duméril & Bibron, 1854) - Brown-speckled whip snake; and Ahaetulla prasina (Boie, 1827) - Oriental whip snake or Asian vine snake which is further reported to have  4 subspecies under it viz., Ahaetulla prasina prasina (Boie, 1827); Ahaetulla prasina medioxima, Lazell, (2002); Ahaetulla prasina preocularis (Taylor, 1922), and Ahaetulla prasina suluensis, Gaulke, (1994).

Ahaetulla nasuta (Lacépède 1789)- Image source: Kalyan Varma (wikipedia)

Dorsally the species is thin, long having slender body; dorsal scales are smooth and are obliquely arranged. While the color of the species found is bluish-green or parrot green; and brown in variability. There is even black inter-scale form present in tilted style from neck up to mid body. Over the ventral side belly is entirely yellow-green in color and is pattern less. Occasional a white or yellow color border separates the dorsal and ventral surfaces. On the other hand the subcaudal scales are paired in as crisscross mode. Dorsal scales are arranged in oblique rows of 15:15:13. Anal divided and are 166-207 in number; sub caudal are 156-180 in males whereas 135-152 in females and are paired. Snakes have 8 super labials out of which 5th in contact with eye; lower labials 4 touching the anterior chin-shields which are shorter than posterior ones; preocular 1; loral absent, presubocular 1 or 2; postocular 2; temporal 1+2 or 2+2. Head in these snakes are long and distinguishable from neck having pointed snout. The color of the upper lip is white or yellow. Eyes have horizontal pupils. While tail in these specimens are very long, thin and slender tail ends having pointed tip.

As the species is mildly venomous in nature its bite causes swelling, pain, bruising and numbness in the area of bite and usually symptoms subsides within 3-4 days. In terms of habitat the species like to be in low bushes, shrubs and trees in lowland forest ranges at an elevation of about 1000 m.asl, especial near the streams, rarely can be seen near human settlements also. There is no local threat is reported concerning the species expect the declining habitat.

Literature Cited:
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Bhattarai, S., Pokheral, C.P., Lamichhane, B.R., Regmi, U.R., Ram, A.K. and Subedi, N. (2018). Amphibians and reptiles of Parsa National Park, Nepal. Amphibian & Reptile Conservation, 12(1): 35–48 (e155)
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 Brischoux, F., Pizzatto, L. and Shine, R. (2010). Insights into the adaptive significance of vertical pupil shape in snakes. Journal of Evolutionary Biology, 23 (9): 1878–1885. 
By Davidvraju - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=50900753 retrieved on 18 March 2020
By Jayendra Chiplunkar - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19498520 retrieved on 18 March 2020
By Kalyan Varma - Own work, CC BY-SA 4.0,  https://commons.wikimedia.org/w/index.php?curid=55477295 retrieved on 18 March 2020
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Deepak, V., Narayanan, S., Sarkar, V., Dutta, S.K. and Mohapatra, P.P. (2019). A new species of Ahaetulla Link, 1807 (Serpentes: Colubridae: Ahaetullinae) from India. J. Nat. Hist. 53: 497–516 - get paper here
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Dutta, S.K. and Acharjyo, L. N. (1995). Herpetofaunal resources and their conservation in Orissa, India. Zoos’ Print, 10 (7):5-8
Ganesh, S.R., Asokan, J.R. (2010). Catalogue of Indian herpetological specimens in the collection of the Government Museum Chennai, India. Hamadryad, 35(1):46 – 63
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Hnizdo, J. and Krug, P. 1997. Drei Baumschnüfflerarten (Ahaetulla) - Haltung und Probleme. Sauria, 19 (4): 3-12 - get paper here
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Ahaetulla nasuta,1,Amphiesma stolata,1,Argyrogena fasciolata,1,Banded racer,1,Beer Dev,1,Bergenia ciliata,1,Black Headed Royal Snake,1,Blind Snake,1,Blunt-nosed viper,1,Boiga trigonata,1,Brahminy Worm Snake,1,Braid snake,1,Buff Striped KeelBack | Amphiesma stolatum,1,Calotes versicolor,1,Central Asian Cobra,1,Checkered Keelback,1,CheckeredKeelback,1,Chenab Valley,2,Cobra,1,Common Cat Snake,2,Common Krait| Bungarus caeruleus,1,Common Kukri,1,Common Wolf Snake,1,Conflux,1,Cover Letter Tips,1,Cyrtodactylus himalayanus,1,Daboia russelii,1,Dendrelaphis tristis,1,Dhaman || Rescue,1,Duttaphrynus stomaticus,1,Echis carinatus,1,Egret,1,Elaphe hodgsoni,1,Eryx conicus,1,Eryx johnii,1,Families,1,Flowers,3,Flowers. photography,1,Ganges,1,Gloydius himalayanus,1,Green vine snake,1,Hemidactylus brookii,1,Herpetoreas platyceps,1,Himachal Pradesh,1,Himalayan Bent-toed Gecko,1,Himalayan pit viper,1,Himalayan Ratsnake,1,History,1,Hoplobatrachus tigerinus,1,Indian bullfrog,1,Indian marbled toad,1,Indian python,1,Indian Rat Snake,1,Indian Rat Snake || Rescue III,1,Indian Rat Snake || Rescue IInd,1,Indotyphlops braminus,1,Jan's Cliff racer,1,Kailash Kund (Kablas),1,Kashmir rock agama,1,Khajuraho,1,Khatron Ke Khiladi,1,Laudakia agrorenisis,1,Laudakia tuberculata,1,Leith's sand snake,1,Lycodon aulicus,1,Macrovipera lebetinus,1,Malabar pit viper,1,Malus pumila,1,Manimahesh : The Jewel bearer,1,Mobile photography,2,Monocled cobra,1,Morchella,1,Myna,1,Naja naja,1,Naja oxiana,1,Nature photographs,1,Oligodon arnensis,1,Oligodon arnensis || Rescue,1,Ophiophagus hannah,1,Photography,1,Pit viper,2,Platyceps rhodorachis,1,Poisnous,1,Psammophis leithii,1,Ptyas mucosa,2,Ptyas mucosa | Rescue,1,Ptyas mucosa || Rescue II,1,Python molurus,1,Red Sand Boa,1,Reptile,1,Rhododendron arboreum,1,Russell's viper,1,Saraswati,1,Snake Bite & First Aid Tips,1,Snake Books,1,Snake World,1,Snakes,2,Snakes & Man,1,Spalerosophis atriceps,1,Sparrow Babies,1,Subaar Nag,1,Surkhanda Devi Temple,1,The Quince: Cydonia oblonga,1,Trimeresurus malabaricus,1,Triveni Sangam,1,Tulips,1,Venomous,1,Viburnum grandiflorum,1,Wolf Snake,1,Yamuna,1,
PerSonaLife: Green vine snake | Ahaetulla nasuta (Lacépède, 1789)
Green vine snake | Ahaetulla nasuta (Lacépède, 1789)
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