It was on Thursday that I noticed the Pisaurina mira brevipes, Nursery Web Spiders, guarding their web-enclosed egg cases. On Friday morning I noticed that the adults were gone, and later that day that a few babies had appeared.

Yesterday the situation looked like this:


Now I guess it’s a coincidence that I would have noticed the guarding adults on the day before emergence of the young. Either that or the development period in the egg is very short.

I’m also wondering if the web has a temporary function for providing food that has bumbled its way into the web, as well as for protection of the babies. I’ll have to keep an eye on them for the next few days.

At any rate, it looks like we’ll have plenty of Pisaurina spiders.