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South American black widow的卡通图
第 0646 号，共 1 402 张

South American black widow

Latrodectus curacaviensis
需要看医生很少致命，但被咬了要去看医生。
蜘蛛 咬伤吃：昆虫
对人的危险: 严重被咬了要去看医生。死亡非常罕见。

The South American black widow is a spider from the Lesser Antilles and South America. Females have a red and black pattern and a venomous bite. It is mainly active at night, and it is not aggressive towards people.1

生活在
Lesser Antilles and South America, including Brazil1
北美洲, 南美洲
首页
It is usually found under logs, in sheds, in stone fireplaces, and near trash and debris, so people may meet it around homes and outbuildings.1
长度
1.1 cm到1.7 cm (0.4 in到0.7 in)1
最高速度
约 0.92 公里/小时（0.57 英里/小时）
在陆地上, 粗略估计
它吃什么？
It feeds on small insects.1
真的！South American black widow的照片
South American black widow。照片：Renato Brito。 CC BY 4.0, iNaturalist.

怎样认出它

  • Females grow up to 11–17 mm and have a black and red body and legs.1
  • Males are much smaller, have long legs, and are white or brown.1
  • Females have an hourglass mark with a black diamond shape and four red triangles in a square.1
  • It is mainly nocturnal, so it is most active at night.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 venom contains excitatory neurotoxins (alpha-latrotoxins), which overstimulate the nerves. Bites usually deliver only small amounts of venom. Symptoms can include intense pain at the bite, sweating, rapid breathing, a faster heart rate, swollen eyelids, salivation, stiff and painful abdominal muscles, nausea, vomiting and blurred sight. Some cases have also involved muscle spasms, fever and chills, which are common symptoms of latrodectism (the illness caused by black widow venom).1

它对人有多危险？

对人的危险: 严重被咬了要去看医生。死亡非常罕见。

Bites usually deliver only small amounts of venom, but they can cause dangerous symptoms, mostly in children, older people, and people with heart or breathing problems.1

它害怕时会做什么？

It is not aggressive to humans, but females will attack to defend their egg sacs.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？

South American black widow 约 1.7 cm 长 (0.7 in)一粒米 约 7 mm (0.3 in)一枚 1 欧元硬币 约 2.3 cm (0.9 in)
比你的小指还短

South American black widow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？

值得了解

事实

1

Some reports describe priapism, a painful and prolonged erection in men, after a bite.1

2

In a case in the Brazilian state of Amazonas, the victim had muscle spasms, fever, chills and heavy sweating.1

3

Females are much bigger than males, which is common among black widow spiders.1

4

Males are easy to tell apart from females because of their long legs and white or brown colour.1

5

This spider is mainly active at night, so most encounters are likely after dark.1

谣言粉碎机

谣言： Black widow spiders are aggressive and will attack people.

真相： This species is not aggressive to humans. Females only attack when they are defending their egg sacs.1

给毒液专家

学名
Latrodectus curacaviensis
类别
蜘蛛
家人
Theridiidae2
排序
Araneae
大洲
北美洲, 南美洲
宝宝
Females guard their egg sacs and will attack to defend them.1
对人的危险
3 / 5: 严重3

事实的来源

  1. Latrodectus curacaviensis (Wikipedia (CC BY-SA 4.0))
  2. Latrodectus curacaviensis (iNaturalist): 名称和分类。
  3. Venom Wiki: 危险等级、典型大小和速度估计都是我们自己给出的。看看我们是怎么算的： 我们如何评定危险.

本页的每个事实都有一个编号，指向它的来源。如果我们写错了，抱歉，我们是动物爱好者，不是科学期刊。请写信到 [email protected] 告诉我们，我们会改正。

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同一类别的更多动物: 蜘蛛

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也生活在: 北美洲

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