This mixture attracts parasitic wasps that lay eggs inside the caterpillars.

这种混合物会吸引寄生蜂在毛虫体内产卵。

In the meantime, farmers are doing everything they can to mitigate the spread of the disease, including releasing a parasitic wasp native to Pakistan that kills the infection.

与此同时，农民们正在尽他们所能来减缓这种疾病的传播，包括释放一种产于巴基斯坦的杀死这种感染的寄生蜂。

Perhaps more impressive are some corn and cotton plants, which when eaten by caterpillars, release chemicals in the air that attract parasitic wasps, who fly in and ultimately kill the insects.

也许更厉害的是一些玉米和棉花植物，当它们被毛虫吃掉时，会在空气中释放出化学物质，这些化学物质可以吸引黄蜂飞进来，最终杀死昆虫。

They can also flirt; fight; form complex, long-term memories of their surroundings; and even warn one another about the presence of unseen dangers, such as parasitic wasps.

它们还能调情、打架、对周围环境形成复杂而长期的记忆，甚至还能互相警告寄生蜂等看不见的危险。

X-rays uncovered a 30 million year-old species of parasitic wasps about the size of a grain of rice that even way back then was feeding on ancient flies.

X 射线发现了一种有 3000 万年历史的寄生蜂，大约一粒米那么大，甚至在很久以前就以古老的苍蝇为食。