第 0590 號，共 1 402 號

Sri Lankan green vine snake

Ahaetulla nasuta

名字的由來： The genus name Ahaetulla comes from Sinhalese words meaning "eye plucker", from an old belief that these snakes pluck out human eyes. The species name nasuta is Latin for "of the nose", after its long snout.1

無害對人無害。不用擔心。

後毒牙蛇

咬吃：肉

對人的危險: 輕微跟蜜蜂螫差不多或更輕微。對人基本上無害。

The Sri Lankan green vine snake is a slim, bright green tree snake. It lives only in Sri Lanka, mostly in forests and bush near streams and villages. It is mildly venomous, and its unusual horizontal pupils make it easy to recognise.1

分布在

Endemic to Sri Lanka, in the wet zone's lowland and montane rainforests1

亞洲

首頁

It lives in lowland forest and bush, often near streams and human settlements, so people may meet it in villages and gardens. It spends most of its time in trees.1

長度

1,9 m (6,2 ft)1

最高速度

大約 5,6 km/h（3,5 mph）

在陸地上, 粗略估計

牠吃什麼？

It mainly eats lizards and frogs, and sometimes other snakes, birds and mammals. It hunts slowly by extending its body and swaying gently, like a tree branch.1

Sri Lankan green vine snake 的照片 — Sri Lankan green vine snake。照片：Davidvraju。 CC BY-SA 4.0, Wikimedia Commons.

怎麼認出牠

Long, slender body with a very pointed snout1
Bright green to pale brownish colour1
A yellow line runs along each side of the lower body1
Black-and-white patterned skin shows between the scales1
Horizontal pupils, unlike the vertical slit pupils of many vipers1

常被誤認為： It was once grouped with several other green vine snakes across India and Southeast Asia. Recent studies have split these into separate species, and the Sri Lankan form is now restricted to Sri Lanka.1

毒液力量

咬

咬的時候，毒液會從毒牙或牙齒出來。

牠的毒液有什麼作用？

The snake is mildly venomous. Its bite causes a moderate reaction, with localised pain, swelling, bruising and numbness. These symptoms usually fade within three days.1

牠對人有多危險？

對人的危險: 輕微跟蜜蜂螫差不多或更輕微。對人基本上無害。

Bites usually do not need medical attention. Some bites near vital organs could be more severe.1

牠害怕時會做什麼？

When disturbed, it expands its body to show a black-and-white scale marking and opens its mouth in a threat display.1

如果牠咬人

Bites typically do not require medical attention, but bites near vital organs could be more severe.1
清洗咬傷處，讓傷者保持冷靜，並且就醫。有些種類（例如非洲樹蛇）可能在幾個小時後才致命。

一定要先打緊急電話（112、000、911）。這是一般急救指引，不是醫療建議。急救基本知識

注意安全

絕對不要碰、抓或捉弄野生動物，就算是很小的動物，就算牠看起來在睡覺或已經死了也一樣。
給牠空間。如果遇到了，保持冷靜，慢慢往後退，讓牠自己離開。
如果被牠咬了：保持冷靜，保持不動，打緊急電話（112、000、911）或趕快去醫院。記住牠的樣子，有照片會很有幫助。

牠不是想來抓你。牠用毒液來捕捉食物或保護自己，而且牠更想躲起來。更多安全知識

在世界上的哪裡？

非洲亞洲歐洲北美洲南美洲澳洲與大洋洲

牠有多大？

牠有多長？

跟 4 隻家貓從鼻子接到尾巴一樣長跟 11 根香蕉頭尾相接一樣長可以在 64 秒內跑完 100 公尺（最快的人類需要 9.6 秒）

Sri Lankan green vine snake 跟「你」比起來有多大？

只是在你的瀏覽器裡做算術。什麼都不會儲存，也不會傳送到任何地方。

牠有多快？

一個正在走路的人 大約 5 km/h (3,1 mph)

Sri Lankan green vine snake 大約 5,6 km/h (3,5 mph)

騎腳踏車的小朋友 大約 12 km/h (7,5 mph)

值得知道

小知識

Western internet users have humorously nicknamed it the "judgmental shoelace", because of its long, thin body and narrowed-looking eyes.1

Its horizontal pupils are very unusual among snakes.1

Its name comes from an old Sinhalese belief that it plucks out human eyes. A Portuguese traveller first reported this belief in 1685.1

It hunts by camouflage, slowly swaying to look like a branch.1

A female at London Zoo, kept in isolation from August 1885, gave birth in August 1888.1

給毒液專家

學名: Ahaetulla nasuta
類群: 後毒牙蛇
家人: Colubridae2
排序: Squamata
各大洲: 亞洲
寶寶: It is ovoviviparous, meaning the young develop inside the mother's body, enclosed in an egg membrane, and are born live.1
對人的危險: 1 / 5: 輕微3