A follow up to sighting 4415892. The spider now has two egg sacs. This sequence of images shows the spider with a recently caught moth. The first image shows the white and dark brown spider holding the light brown coloured moth vertically, with the original brown and black striped egg sac to the right. Thanks to Marcus Leach for the original sighting.
Yes it does. The species was Diarsia intermixta, but I don't know if the moth people would be prepared to ID it in its wrapped state. It would be good to know if it keeps catching more of the same.