第 0728 号，共 1 402 张

Woodlouse spider

Dysdera crocata

名字的由来： Its common names come from its main prey, woodlice, which are also called sowbugs, pillbugs and slaters.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 woodlouse spider is a small spider that hunts woodlice, the small grey creatures that curl up when touched. It lives in warm places under logs, stones and plant pots, and it is now found on almost every continent except Antarctica. It is a skilled hunter with large fangs, but it is not known to be a health risk to people.1

生活在

Originally from the Mediterranean; now found from Eurasia to parts of North and South America, South Africa, Australia and New Zealand1

欧洲

首页

It is usually found under logs, rocks, bricks, plant pots and in leaf litter in warm places, often close to woodlice. It has also been found inside houses. During the day it rests in a silk retreat in crevices, usually in partly rotten wood, or in tent-like shelters in the hollows of large rocks.1

长度

9 mm到1.5 cm (0.4 in到0.6 in)1

最高速度

约 0.86 公里/小时（0.53 英里/小时）

在陆地上, 粗略估计

它吃什么？

It mainly eats woodlice. It uses its large fangs to get past the tough outer shell and injects venom into the soft underside, avoiding the woodlouse's unpleasant defensive chemicals. It also eats silverfish, earwigs, millipedes, burying beetles, crickets and other spiders and centipedes.1

Woodlouse spider的照片 — Woodlouse spider。照片：Meghan Cassidy。 CC BY-SA 4.0, iNaturalist.

怎样认出它

Six eyes.1
A tawny orange to dark red head and chest section (cephalothorax) and legs.1
A shiny, pale beige to yellow-brown abdomen, which can be dark grey and sometimes very shiny.1
Very large fangs (chelicerae) for a spider of its size.1
Adult females are 11 to 15 mm long, and males are 9 to 10 mm long.1

常被误认为： The woodlouse spider can be hard to tell apart from Dysdera erythrina, which is much less common. D. erythrina is not usually found near human homes, so location can help.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 injects venom through its fangs to subdue its prey. In people, bites have been known to cause localised itching at the bite site.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。

It is a dangerous predator for woodlice but is not known to be a health hazard to humans or smaller animals. It has been known to bite people if handled. Verified bites have caused no major medical problems.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？

比你的小指还短

Woodlouse 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)

Woodlouse spider 约 0.86 公里/小时 (0.53 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

It is an unusually dominant predator for its size because of its large fangs and wide gape.1

It often dominates and sometimes kills other spiders and centipedes.1

Courtship is typically aggressive, and mates can be injured by each other's large fangs.1

It hunts at night and does not spin a web. Instead, it searches warm places for prey.1

Although it began in the Mediterranean, it is now found on several continents, including Australia and New Zealand.1

谣言粉碎机

谣言： Woodlouse spiders are dangerous to people.

真相： They are not known to be a health hazard to humans. They can bite if handled, but verified bites have not caused major medical problems.1

给毒液专家

学名: Dysdera crocata
类别: 蜘蛛
家人: Dysderidae2
排序: Araneae
大洲: 欧洲
宝宝: The female lays her eggs in a silk sac, which can hold up to 70 eggs. She is believed to look after her young after they hatch.1
对人的危险: 1 / 5: 轻微3