If spiders had nightmares, the larvae of ichneumonid wasps would have to star in them. The wasp lays an egg on the back of an orb weaver spider, where it grows fat and bossy, and occupies itself with ...

It’s like a horror movie come to life. In a new study, biologists say there’s a certain type of wasp, called the emerald jewel wasp, that has a peculiar way of making sure its young have a head start ...

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