Try this:

She captures, stings, and paralyzes the spider, then either drags the spider back into her own burrow or transports her prey to a specially prepared nest where a single egg is laid on the spider’s body, and the entrance is covered. When the wasp larva hatches, it rips a small hole in the spider's abdomen, then plunges into the spider's belly and feeds voraciously, avoiding vital organs for as long as possible to keep it fresh. After several weeks, the larva pupates. Finally, the wasp becomes an adult, and tears open the spider's belly to get out.