第 0679 號，共 1 402 號

Cupboard spider

Steatoda grossa

名字的由來： Its names 'false black widow' and 'false widow' come from how much it looks like the black widow spider.1

無害對人無害。不用擔心。

蜘蛛

咬吃：肉

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。

The cupboard spider is a common house spider that lives in dark corners and builds messy, three-dimensional webs. It is often mistaken for the dangerous black widow, but its bite is usually minor. Its name shows that it is found in many parts of the world, including Europe, temperate Asia and areas where it has been introduced.1

分布在

Native to Europe and much of temperate Asia. Introduced to North and South America, Macaronesia, Africa, New Zealand and Hawaii.1

歐洲

首頁

It constructs three-dimensional webs in dark places. In South Africa it has been found in grassland, fynbos, Nama Karoo and savanna biomes.1

長度

1,1 cm (0,4 in)1

最高速度

大約 0,86 km/h（0,53 mph）

在陸地上, 粗略估計

牠吃什麼？

It builds a cobweb of sticky silk fibres and depends mostly on vibrations travelling through the web to find prey. It reportedly preys on black widows.1

Cupboard spider 的照片 — Cupboard spider。照片：Ryan Kaldari, no known copyright restrictions (public domain)。 Public domain, iNaturalist.

怎麼認出牠

Adult females are 6 to 10.5 mm long, dark coloured and round-bodied, with a bulbous abdomen.1
Typical colour ranges from purplish brown to black, with light-coloured markings.1
It has no bright red hourglass pattern or other bright, distinctive markings.1
Males are thinner and can be nearly as long as females, at 4.1 to 10 mm.1
Sexually mature males have lighter, more reddish legs than females.1

常被誤認為： It is often confused with black widows and redbacks (Latrodectus species), which have a bright red hourglass pattern that this spider lacks. Steatoda borealis is similar in shape but slightly smaller and found in colder climates. It has coloured markings on the top of the abdomen rather than the underside.1

毒液力量

咬

咬的時候，毒液會從毒牙或牙齒出來。

牠的毒液有什麼作用？

The bite is minor in humans and has no long-lasting effects. Symptoms can include blistering at the bite site and pain. A few cases have included fever, nausea, sweating and a general feeling of being unwell that lasted several days.1

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。

The spider is not aggressive. Most injuries to people happen when a spider is accidentally squeezed or pinched and bites in defence. It is possible that a spider may bite a finger pushed into its web by mistake.1

好消息：醫生有藥（抗毒血清）或治療方法。1

牠害怕時會做什麼？

It usually flees when a large creature comes near, and it bites when it is squeezed or pinched.1

如果牠咬人

清洗咬傷處，用冰敷袋冰敷止痛。如果很痛、疼痛擴散或傷者覺得不舒服，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？

小到可以坐在你的指甲上

Cupboard spider 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)

Cupboard spider 大約 0,86 km/h (0,53 mph)

一個正在走路的人 大約 5 km/h (3,1 mph)

值得知道

小知識

Director Sam Raimi chose this spider to play the radioactive spider that bites Peter Parker in the 2002 film Spider-Man. The filming spider was painted with red and blue makeup.1

The spider reportedly preys on black widows, which can make it useful to have around.1

It can go several months without feeding, as long as it has access to water.1

Females can live up to six years, while males typically live 1 to 1.5 years and often die shortly after mating.1

破解迷思

迷思： It is a dangerous widow spider, just like the black widow.

真相： Its bite is minor in humans and has no long-lasting effects, although it can cause pain, blistering and, in a few cases, several days of feeling unwell.1

給毒液專家

學名: Steatoda grossa
類群: 蜘蛛
家人: Theridiidae2
排序: Araneae
各大洲: 歐洲
寶寶: A well-fed female can lay three or more egg sacs each year, with 40 to 100 eggs in each sac. The eggs usually hatch within a month at normal household temperature and humidity, and the spiderlings are independent from the moment they hatch.1
壽命: 大約 6 年1
對人的危險: 1 / 5: 輕微3