第 0682 号，共 1 402 张

Triangulate cobweb spider

Steatoda triangulosa

名字的由来： Its common name comes from the triangle-shaped pattern on the top of its abdomen.1

无害对人无害。不用担心。

蜘蛛

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 triangulate cobweb spider is a small, common house spider with a triangle-shaped pattern on its abdomen. It builds messy sticky webs in dark corners of buildings and is found across much of the world. It is a helpful spider that catches many insects and other spiders.1

生活在

Native to Eurasia. Introduced to North America, Argentina, the Canary Islands and South Africa.1

欧洲, 亚洲

首页

This spider is mainly a house spider. It builds webs in dark corners of buildings and other man-made structures. It is also found in dark places outdoors, often close to the ground and under stones.1

长度

6 mm (0.2 in)1

最高速度

约 0.74 公里/小时（0.46 英里/小时）

在陆地上, 粗略估计

它吃什么？

It preys on many arthropods, including ants (such as fire ants), other spiders, pillbugs and ticks. It also catches some spiders that are believed to be harmful to humans, including the brown recluse. It catches whatever comes into its web and builds the web to suit the size of its prey.1

Triangulate cobweb spider的照片 — Triangulate cobweb spider。照片：Patrick Hacker。 CC BY 4.0, iNaturalist.

怎样认出它

Adult females are 3 to 6 mm long.1
The cephalothorax (front body section) is brownish-orange.1
The legs are spindly and yellowish, with tiny hairs.1
The round, bulbous abdomen is creamy, with parallel purply-brown zigzag lines running front to back.1
The abdomen pattern includes a triangle shape on its top side.1

毒液之力

咬伤

它咬的时候，毒液通过毒牙或牙齿出来。

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。

It is not very defensive towards humans. There is one known case of human envenomation.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

Triangulate cobweb 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)

Triangulate cobweb spider 约 0.74 公里/小时 (0.46 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

Below or inside its web, there can be many dead insects, from stink bugs to other spiders and even wasps.1

Among the Steatoda spiders, it is one of the most voracious and prey-driven, even though it is one of the smaller species.1

Because of its limited eyesight, it relies mostly on vibrations travelling through its web to find prey and to sense larger animals that could harm it.1

Its egg sac is loosely woven silk and is about the same size as the spider itself.1

It spends hours each day building its web and eats during only part of its day.1

给毒液专家

学名: Steatoda triangulosa
类别: 蜘蛛
家人: Theridiidae2
排序: Araneae
大洲: 欧洲, 亚洲
宝宝: Each egg sac is about the same size as the spider and holds approximately 30 eggs. Reproduction without males (parthenogenesis) is suspected but not proven.1
它在野外过得怎么样: Least Concern1
对人的危险: 1 / 5: 轻微3