第 0710 号，共 1 402 张

Joro spider

Trichonephila clavata

名字的由来： Its common name comes from the jorōgumo, a legendary spider in Japanese folklore.1

无害对人无害。不用担心。

蜘蛛

咬伤吃：昆虫

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

The Joro spider is a large orb-weaving spider from East Asia. It has spread into parts of the eastern United States since the 2010s. It rarely bites people, and its venom is not medically significant.1

生活在

East Asia (China, Japan except Hokkaidō, Korea, Taiwan); spreading across parts of the eastern United States1

亚洲

首页

Females build large webs and lay egg sacks on trees. In North America, the spider has also been seen in cities, on streetlamps and telephone poles.1

长度

2.5 cm (1 in)1

最高速度

约 1.7 公里/小时（1.1 英里/小时）

在陆地上, 粗略估计

它吃什么？

It eats mainly invasive or nuisance insects. It has been seen catching the brown marmorated stink bug, which native spiders in North America have not been known to eat.1

Joro spider的照片 — Joro spider。照片：Kumon。 CC BY 4.0, iNaturalist.

怎样认出它

Adult females have stripes of yellow and dark blue, with red toward the rear of the abdomen.1
Both sexes have a large abdomen and long legs.1
Females are much larger than males: about 1.7 to 2.5 cm, compared with about 0.7 to 1.0 cm for males.1
The web's yellow threads look gold in sunlight. The web has three layers, unusual for an orb web: a central orb, plus two irregular layers in front and behind it.1
Females' webs may reach several metres across.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？

Its venom is weak. A bite causes temporary pain and redness, which has been compared to a bee sting. The venom is not medically significant.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。

Its bite does not pose significant risks to humans. Its fangs are small and it is reluctant to bite, so bites are unlikely.1

它害怕时会做什么？

It is reluctant to bite.1

如果它咬人

清洗咬伤处，用冰袋冷敷止痛。如果疼得厉害、疼痛扩散或感到不适，就去看医生。

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？

差不多和一个回形针一样长210 秒就能跑完 100 米（最快的人需要 9.6 秒）

Joro spider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？

一只陆龟 约 0.3 公里/小时 (0.19 mph)

Joro spider 约 1.7 公里/小时 (1.1 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

Females spin webs several metres long, and their yellow threads look gold in sunlight.1

The name comes from a shape-shifting spider in Japanese folklore that can breathe fire and control other spiders.1

By October 2022, its range covered at least 120,000 km² across several US states.1

In the Ao-Naga people's food tradition, this spider is eaten.1

The spider was first spotted in North America in Hoschton, Georgia, in 2013, and its presence was confirmed in 2014.1

Smaller males are sometimes seen in the females' webs during autumn, when they mate.1

给毒液专家

学名: Trichonephila clavata
类别: 蜘蛛
家人: Nephilidae2
排序: Araneae
大洲: 亚洲
宝宝: Eggs overwinter, and young emerge in spring. After mating, the female lays 400 to 1,500 eggs in one egg sack on a tree.1
对人的危险: 1 / 5: 轻微3