第 0765 號，共 1 402 號

Mexican redknee tarantula

Brachypelma smithi

無害對人無害。不用擔心。

咬吃：肉

The Mexican redknee tarantula is a large, hairy spider from the Pacific coast of Mexico. It lives in burrows under rocks and tree roots, and it is a popular pet among tarantula keepers. Its name has caused confusion, because for many years it was mixed up with a very similar species.1

分布在

Pacific coast of Mexico, in the state of Guerrero1

北美洲

首頁

It lives in hilly deciduous tropical forests, among dense thickets. It builds or extends burrows under rocks and tree roots, usually in or near vegetation. Females spend most of their lives inside their burrows.1

長度

4,4 cm 到 5,9 cm (1,7 in 到 2,3 in)1

最高速度

大約 1,8 km/h（1,1 mph）

在陸地上, 粗略估計

牠吃什麼？

It hunts by waiting at the entrance of its burrow to ambush passing prey. Its prey includes large insects, frogs and mice.1

Mexican redknee tarantula 的照片 — Mexican redknee tarantula。照片：Dguendel。 CC BY 3.0, Wikimedia Commons.

怎麼認出牠

Males and females are large, with bodies about 4 to 6 cm long, not counting the fangs and spinnerets.1
Legs and palps (the short leg-like parts near the mouth) are bluish black with reddish orange and pale pink rings.1
Adult males have a yellowish brown carapace (the hard top of the front body) and a black upper abdomen.1
Adult females vary more. The carapace may be mostly bluish black with a light brown border, or have a dark starburst pattern.1

常被誤認為： It is often confused with Brachypelma hamorii, which has very similar colours. The two can be told apart by two brownish pink bands on the chelicerae (the fang-bearing parts), which are present in B. hamorii but absent in B. smithi. Mature males can also be told apart by the shape of the palpal bulb, which is straighter and spoon-shaped in B. smithi.1

毒液力量

咬

咬的時候，毒液會從毒牙或牙齒出來。

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。

如果牠咬人

清洗咬傷處並冷敷。如果很痛或傷者覺得不舒服，要就醫。

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？

比你的小指頭還短可以在 200 秒內跑完 100 公尺（最快的人類需要 9.6 秒）

Mexican redknee tarantula 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？

一隻陸龜 大約 0,3 km/h (0,19 mph)

Mexican redknee tarantula 大約 1,8 km/h (1,1 mph)

一個正在走路的人 大約 5 km/h (3,1 mph)

值得知道

小知識

Large numbers of wild-caught Mexican redknee tarantulas are still smuggled out of Mexico. At least 3,000 Mexican tarantulas were sent to the United States or Europe a few years before 2017, most of them this species.1

Its burrow has a single entrance, a tunnel about three times the spider's leg span long, and one or two chambers, one for moulting and one for resting and eating.1

Males have shorter bodies than females but longer legs.1

破解迷思

迷思： The name Mexican redknee tarantula always refers to one single species.

真相： The name has been used for two very similar species, B. smithi and B. hamorii. Many older sources mixed them up, so earlier records may be about either species.1

給毒液專家

學名: Brachypelma smithi
類群: 捕鳥蛛和漏斗網蜘蛛
家人: Theraphosidae2
排序: Araneae
各大洲: 北美洲
寶寶: Females lay eggs in their burrows, and they seal the entrance with silk while molting or laying eggs.1
對人的危險: 1 / 5: 輕微3