That is disgusting, fascinating and impressive in equal measure.
What kit are you using to take those? My camera club has a set subject next year of insects (yes I know it's an arachnid not an insect) but I have nothing which can get that close, even with a close up filter.
One last question - why does the egg sack look like a sack in one (the 2nd) and in the others just looks like a ball of baby spiders?