Mud-wasp nest

So, I was at my parents replacing some windows, and in the course of doing so I had to destroy a mud-wasp nest. These are really interesting critters. I'd only read about them, and this was the first time I've seen the inside of one of these nests. The female mud-wasp builds a nest out of you-guessed it, mud. She fills the nest with paralyzed spiders. She hunts the spiders, and with her sting not only paralyzes the spiders but also reduces their metabolism. This allows the spiders to live (if you can call it that) in a state of suspended animation. She stuffs the spiders into a tunnel in her mud nest. She lays a couple of eggs, and seals up the nest. The blind grubs hatch, and begin sucking the blood of the nearest paralyzed spiders, leaving behind empty spider husks. The grub works its way through the dark tunnel, eating spider after spider and incorporating the spider venom, eventually emerging from the nest as a fully formed mud-wasp with the potential to give a nasty sting. No word on what the grub does with the extra spider web. These wasps are huge, and scary looking. Below you can see pictures of the spiders and the opened nest.