第 0704 號，共 1 402 號

Diving bell spider

Argyroneta aquatica

名字的由來： The genus name Argyroneta comes from Greek words meaning 'silver' and 'spinner', so it means 'spinner of silver', after the silvery look of its air bell.1

只是會痛會痛，但不會對你造成嚴重傷害。

蜘蛛

咬吃：肉

對人的危險: 疼痛可能會非常痛，但幾乎從來不會很嚴重。

The diving bell spider is the only spider known to live almost entirely underwater. It makes its home in clean freshwater across Europe and Asia. It is special because it breathes air that it carries down from the surface and keeps in a silk bell under the water.1

分布在

Freshwater in mainland Europe, the British Isles and central to northern Asia, reaching as far south as Iran and north to Siberia. Japan has a very similar subspecies.1

歐洲, 亞洲

首頁

It lives in clean freshwater with aquatic plants, such as lakes, ponds, canals, marshes and slow-moving streams. It builds its diving bell between submerged water plants.1

長度

8 mm 到 1,5 cm (0,3 in 到 0,6 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 eats aquatic insects and crustaceans such as mosquito larvae and Daphnia. It waits in its bell and darts out to catch prey that touches the bell or its anchor threads.1

Diving bell spider 的照片 — Diving bell spider。照片：Baupi。 CC BY-SA 4.0, iNaturalist.

怎麼認出牠

Out of the water, it is mid to dark brown.1
Hairs on the abdomen give it a dark grey, velvet-like look.1
Underwater, an air bubble trapped by dense hairs on the abdomen and legs makes it look silvery.1
Males have a head-and-body length of 10 to 15 mm, and females 8 to 12 mm.1
It spends most of its time inside a silk diving bell, darting out to catch prey.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？

Reports describe a bite that is painful, with local swelling, vomiting and a slight fever that lasts 5 to 10 days. These reports are old and unverified, so the effects are not well confirmed.1

牠對人有多危險？

對人的危險: 疼痛可能會非常痛，但幾乎從來不會很嚴重。

The bite is reputedly painful, but there is no solid evidence of serious harm to people. Recent confirmed reports are lacking.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？

比你的小指頭還短

Diving bell 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)

Diving bell 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

It is the only known spider that spends almost its whole life underwater, including resting, hunting, mating, laying eggs and overwintering. It surfaces only briefly to refill its air supply.1

Its diving bell is made of waterproof silk and lets gases pass through. Oxygen flows in and carbon dioxide flows out, so the bell works like a kind of gill.1

Nitrogen slowly leaves the bell, so the air bubble shrinks and the spider must keep refilling it.1

Unlike most spiders, the males are larger than the females, and they are more active hunters.1

破解迷思

迷思： Its bite is very painful and causes vomiting and fever.

真相： These effects are based on old, unverified reports. There is no solid evidence for them, and recent confirmed reports are lacking.1

給毒液專家

學名: Argyroneta aquatica
類群: 蜘蛛
家人: Argyronetidae2
排序: Araneae
各大洲: 歐洲, 亞洲
寶寶: After mating in the female's bell, she builds an egg sac inside it and lays between 30 and 70 eggs.1
壽命: 大約 2 年1
牠在野外的狀況: Endangered in South Korea1
對人的危險: 2 / 5: 疼痛3