第 0732 号，共 1 402 张

Common house spider

Parasteatoda tepidariorum

名字的由来： The scientific name Parasteatoda tepidariorum places it in the genus Parasteatoda. The common name refers to its habit of living in houses.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 common house spider is a small spider that lives in and around human homes. It spins messy three-dimensional webs in dark corners and catches household insects. It is found in many parts of the world, and its bite is not known to be dangerous to people.1

生活在

Native to Asia. Introduced to Canada, the USA, South America, Europe, South Africa, New Zealand, Hawaii and other areas.1

北美洲, 南美洲

首页

It lives in dark corners in and near buildings, where it builds its webs. It is often found around human dwellings.1

长度

6 mm (0.2 in)1

最高速度

约 0.8 公里/小时（0.5 英里/小时）

在陆地上, 粗略估计

它吃什么？

It usually eats small insects and household pests that get caught in its web. If prey is too quick, it shoots web at it from a distance and then pulls the thread back in. Larger females can even attract baby skinks by hanging fly remains in their web.1

Common house spider的照片 — Common house spider。照片：Rodrigo Paiva Lázaro。 CC BY 4.0, iNaturalist.

怎样认出它

Its colour varies from tan to nearly black, often with patterns of different shades on the body.1
Females are usually 5 to 6 mm long, and males are usually 3.8 to 4.7 mm long.1
With legs outspread, it can measure 2.5 cm or more across.1
Its webs are three-dimensional and built in dark corners.1

常被误认为： Its body shape is similar to that of widow spiders. Males have a less bulbous (rounded) abdomen than females.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？

It has neurotoxic venom, which attacks the nerves. Its bites are less severe than those of other theridiids (a family of cobweb spiders).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 bites are not known to be dangerous to humans. It bites people only in self-defence, when it is grabbed and squeezed.1

它害怕时会做什么？

It runs to a secure hiding place when it senses movement, and if cornered it plays dead as a last resort.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？

小到能坐在你的指甲上

Common house 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)

Common house spider 约 0.8 公里/小时 (0.5 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

The assassin bug Stenolemus lanipes apparently feeds only on its young, though it can also eat adults.1

When food dries out, it usually drops it to the floor to free up space in its web, rather than rebuilding the web.1

It has poor eyesight and cannot detect movement more than three to four inches away.1

Males and females often share the same web for long periods, though females sometimes fight when they meet.1

谣言粉碎机

谣言： Common house spiders are dangerous to people.

真相： Their venom is neurotoxic, but their bites are not known to be dangerous to humans. They bite only when grabbed and squeezed.1

给毒液专家

学名: Parasteatoda tepidariorum
类别: 蜘蛛
家人: Theridiidae2
排序: Araneae
大洲: 北美洲, 南美洲
宝宝: Females hang their spherical egg sacs in their webs, with clutches averaging 149 eggs. The young stay in the mother's web for several days after hatching.1
对人的危险: 1 / 5: 轻微3