第 0706 号，共 1 402 张

Raft spider

Dolomedes fimbriatus

名字的由来： The genus name Dolomedes is from Greek and is translated as crafty or wily.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 raft spider is a large spider that lives partly in the water. It is found across north-western and central Europe, mostly in wet heaths and swampy places. It is one of only two Dolomedes spiders found in Europe.1

生活在

North-western and central Europe1

欧洲, 亚洲

首页

Adults live in freshwater wetlands, especially wet heaths and acid swamps. Juveniles are mostly found in the plants on land around wetland areas.1

长度

2.2 cm (0.9 in)1

最高速度

约 1.3 公里/小时（0.81 英里/小时）

在陆地上, 粗略估计

它吃什么？

It eats freshwater invertebrates such as water beetles, pond striders and dragonfly larvae. It hunts on the water surface and detects prey through vibrations in the water. Occasionally it eats small vertebrates such as sticklebacks and small frogs.1

Raft spider的照片 — Raft spider。照片：LithobiusOrigins。 CC BY-SA 4.0, Wikimedia Commons.

怎样认出它

Adults are dark brown with a white, cream or yellow stripe along both sides of the abdomen and thorax.1
Juveniles look similar but often have green translucent legs.1
Females are usually larger than males.1
Hunts on the surface of the water with its front legs outstretched.1

常被误认为： The only other Dolomedes spider in Europe is Dolomedes plantarius, which is slightly larger. It is endangered in the UK.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。

它害怕时会做什么？

To escape birds, it can fully submerge itself in water and has been known to hide underwater for several minutes.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？

差不多和一个回形针一样长280 秒就能跑完 100 米（最快的人需要 9.6 秒）

Raft 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)

Raft spider 约 1.3 公里/小时 (0.81 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

This spider is one of the few species known to attack nearly almost all approaching males, which biologists consider unusual because it can stop mating from succeeding.1

The raft spider can stay hidden underwater for several minutes.1

Females will sometimes eat the male before, during or immediately after mating.1

Males signal their presence to the female by using vibrations on her dragline, which may help them avoid being attacked.1

给毒液专家

学名: Dolomedes fimbriatus
类别: 蜘蛛
家人: Dolomedidae2
排序: Araneae
大洲: 欧洲, 亚洲
宝宝: The female carries her fertilised egg sac, then places it in a silken nursery tent she has made. She guards the nursery until the spiderlings are ready to leave.1
对人的危险: 1 / 5: 轻微3