第 0967 号，共 1 402 张

Western yellowjacket

Vespula pensylvanica

只是会疼会疼，但不会对你造成严重伤害。

蜇伤吃：什么都来一点

The western yellowjacket is a social wasp with a yellow and black body. It lives across the western half of North America and has spread to the Hawaiian Islands, where it is considered a major pest. Its colonies can grow very large in places without cold winters.1

生活在

Western half of North America, from Mexico to western Canada, and the Hawaiian Islands of Kauai, Oahu, Maui and Hawaii1

北美洲

首页

It lives in open forest, prairies, urban areas, gardens, parkland, meadows and houses. Nests are usually built 10 to 15 cm below ground or in dark cavities such as rodent burrows or old logs.1

长度

1.5 cm (0.6 in)3

典型成年个体大小

最高速度

约 24 公里/小时（15 英里/小时）

飞行, 粗略估计

它吃什么？

Workers hunt insects and scavenge dead animals for meat, and feed on plant nectar for sugars. They chew prey into pieces, usually removing the head first from large insects, and in Hawaii they also raid honey bee colonies.1

Western yellowjacket的照片 — Western yellowjacket。照片：Eugene Zelenko。 CC BY-SA 4.0, iNaturalist.

怎样认出它

Yellow and black pattern, typical of social wasps in the genus Vespula1
Most females have a continuous yellow ring around each eye, known as an eye-loop1
A diamond-shaped black mark on the first tergum (the upper plate of the abdomen)1
Nests are made of wood fibres and enclosed in a paper envelope, with an entrance tunnel of 10 to 30 cm at the bottom1

常被误认为： It is often misidentified as V. germanica, which has a similar diamond-shaped black mark. The continuous yellow eye-loop around each eye usually tells the western yellowjacket apart, though males often lack it.1

毒液之力

蜇伤

毒液通过蜇刺出来。

它对人有多危险？

对人的危险: 很疼可能真的很疼，但几乎从不严重。

如果它蜇人

刮掉蜜蜂的蜇针，冷敷患处。
如果这个人呼吸困难、脸或喉咙肿胀，或感觉要晕倒，这是过敏急症：拨打急救电话，如果他们有肾上腺素笔就使用。

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。
如果被它蜇了：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16 秒就能飞过一整个足球场

Western yellowjacket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？

一只家蝇 约 7 公里/小时 (4.4 mph)

Western yellowjacket 约 24 公里/小时 (15 mph)

一个全力冲刺的人 约 37 公里/小时 (23 mph)

值得了解

事实

Workers settle dominance within the nest by mauling, where one wasp chews on another that stays still.1

In Hawaii, the western yellowjacket has become so invasive that it is labelled a major pest.1

The nest is kept cleaner than those of many other social wasps, with waste, prey remains and dead larvae removed.1

Only the inseminated queen survives the winter, entering diapause (a resting state) until spring.1

Most foraging happens close to the nest, usually within about 335 metres, though some trips reach about 550 metres.1

Cold weather limits the number of western yellowjackets, but in places without cold winters their population can grow very quickly.1

给毒液专家

学名: Vespula pensylvanica
类别: 蜜蜂、胡蜂和大黄蜂
家人: Vespidae2
排序: Hymenoptera
大洲: 北美洲
宝宝: The queen lays the eggs, and the larvae are fed by the queen at first and later by the workers.1
对人的危险: 2 / 5: 很疼3