第 0590 号，共 1 402 张

Sri Lankan green vine snake

Ahaetulla nasuta

名字的由来： 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

无害对人无害。不用担心。

后沟牙蛇

咬伤吃：肉

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

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

生活在

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

亚洲

首页

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

长度

1.9 m (6.2 ft)1

最高速度

约 5.6 公里/小时（3.5 英里/小时）

在陆地上, 粗略估计

它吃什么？

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.

怎样认出它

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

常被误认为： 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

毒液之力

咬伤

它咬的时候，毒液通过毒牙或牙齿出来。

它的毒液会造成什么？

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

它对人有多危险？

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

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

它害怕时会做什么？

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

如果它咬人

Bites typically do not require medical attention, but bites near vital organs could be more severe.1
清洗咬伤处，让人保持冷静并就医。有些种类（比如非洲树蛇）可能几小时后才致命。

一定先拨打你的急救电话（112、000、911）。这里是一般急救指导，不是医疗建议。急救基础

注意安全

永远不要摸、抓或逗弄野生动物，即使是很小的，即使它看起来在睡觉或已经死了。
给它留出空间。如果遇到它，保持冷静，慢慢后退，让它走自己的路。
如果被它咬了：保持冷静，保持不动，拨打你的急救电话（112、000、911）或尽快去医院。记住它长什么样，拍张照片会有帮助。

它不是冲着你来的。它用毒液捕猎或保护自己，而且它更愿意躲起来。更多安全知识

在世界哪里？

非洲亚洲欧洲北美洲南美洲澳大利亚和大洋洲

它有多大？

它有多长？

和 4 只家猫鼻子接尾巴一样长和 11 根香蕉首尾相接一样长64 秒就能跑完 100 米（最快的人需要 9.6 秒）

Sri Lankan green vine snake和你比起来有多大？

只是在你的浏览器里算一算。什么都不会被保存或发送到任何地方。

它有多快？

一个在走路的人 约 5 公里/小时 (3.1 mph)

Sri Lankan green vine snake 约 5.6 公里/小时 (3.5 mph)

一个骑自行车的孩子 约 12 公里/小时 (7.5 mph)

值得了解

事实

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

给毒液专家

学名: Ahaetulla nasuta
类别: 后沟牙蛇
家人: Colubridae2
排序: Squamata
大洲: 亚洲
宝宝: It is ovoviviparous, meaning the young develop inside the mother's body, enclosed in an egg membrane, and are born live.1
对人的危险: 1 / 5: 轻微3