第 0693 号，共 1 402 张

Wetland giant wolf spider

Tigrosa helluo

名字的由来： The genus name Tigrosa means "fierce like a tiger", a reference to the aggressive nature and colourful patterns of these spiders.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 wetland giant wolf spider is a fairly small wolf spider found across the eastern United States, parts of Canada and Mexico. It hunts at night on the ground instead of building a web. Its bite is not medically significant to people.1

生活在

United States, Canada and Mexico; most of the eastern half of the US, from New England to Florida, west as far as Kansas and Nebraska1

北美洲

首页

It lives in woods, marshes, fields and riparian areas, and prefers wetter places over dry ones. Females make nests under stones or boards in fields and woods. In Florida and Mississippi it is most often found in marshes and lakes.1

长度

6 cm (2.4 in)3

典型成年个体大小

体重

200 g (7 oz)1

最高速度

约 1.2 公里/小时（0.75 英里/小时）

在陆地上, 粗略估计

它吃什么？

It eats a wide range of insects, including crickets, fly grubs, cockroaches, mealworms and beetles, and sometimes smaller spiders. It waits for prey and hunts alone, mostly at night. Females wait in their burrows, while males roam and look for prey.1

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

怎样认出它

The carapace (the hard upper shell of the front body) is brown, with a distinct yellow stripe running from the front eyes down the body.1
The underside of the abdomen has distinct black spots.1
It is around 17 mm long on average, which makes it one of the smaller wolf spiders.1
Males have yellow legs without distinct markings. Females have reddish brown legs without markings or bands.1
It does not make webs and is usually active at night.1

常被误认为： It is often mistaken for the nursery web spider (Pisaurina mira). The wetland giant wolf spider has a brown carapace with a distinct yellow stripe from the front eyes, and black spots on the underside of the abdomen. It is also similar to T. georgicola, but it has black spots that T. georgicola lacks, and its faint yellow stripes do not extend as far.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？

Its bite injects venom. In people, the venom causes only minor pain and swelling.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 not very aggressive and will not attack people unless provoked. Its bite is not medically significant to humans, and antivenom is rarely needed.1

好消息：医生有药（抗毒血清）或治疗方法。1

它害怕时会做什么？

It hides in burrows, under stones or boards, and relies on camouflage and speed to avoid predators. If needed, it will bite a predator and inject venom.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？

它有多重？

和 1.5 根香蕉一样重

和 2 块玩具积木排成一排一样长300 秒就能跑完 100 米（最快的人需要 9.6 秒）

Wetland giant wolf 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)

Wetland giant wolf spider 约 1.2 公里/小时 (0.75 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

Females can cannibalise males during or after mating. Smaller males are more likely to be eaten, and hungry females are more likely to do it.1

This species does not build webs. Females make silk-lined burrows under stones or boards instead.1

Males live for just over a year, while females often live for around two years.1

Hunger affects behaviour. Well-fed females made significantly more burrows than starved ones in a 1999 study.1

Females are much larger than males. Mature females weigh more than 300 mg and have carapaces about 6.5 mm wide, while males usually weigh more than 200 mg and have carapaces about 4.5 mm wide.1

谣言粉碎机

谣言： Wolf spider bites are dangerous and medically serious.

真相： The bite injects venom, but it usually causes only minor pain and swelling. The spider is not very aggressive and will only bite when provoked.1

给毒液专家

学名: Tigrosa helluo
类别: 蜘蛛
家人: Lycosidae2
排序: Araneae
大洲: 北美洲
宝宝: Mating usually happens in May or June. Females carry their egg sac on their back until the eggs hatch, then carry the hatchlings on their back until they can hunt on their own.1
寿命: 约 2 年1
对人的危险: 1 / 5: 轻微3