and use them as a host for their eggs and larvae. The wasp will drag the tarantula to a specially dug hole, or even to the spider's own den, using that as a pseudo-nest, rather than building one. Many ...

via Wikimedia Commons The incapacitated spider is either held captive in its own burrow or dragged to the wasp's nest. The female then lays a single egg on the spider's body. The purpose of this act: ...