I've been searching about these guys for years. There are a few good books on mesothelae out there, but from what I've gathered they are extremely ancient primitive spiders that require moist, deep substrate. They are really rare in the hobby and I only know of one person breeding them. Even then he said he wants to hold on to them, so we aren't going to see them in the hobby for a long while. And because of that, not a lot of people are going to be doing research on them, care or otherwise.
Ken got them in on a shipment from that area I believe. That was about four (five?) months ago and I can assure you none of them are large enough to breed yet. The person I talked to was here on AB (not giving out names because he wants to be kept on the DL) but he kept them communally and supposedly it works with them. He gave them a ton of deep, moist sub and the spiders were sharing burrows from time to time.