Hey JC. I have a P. Metallica that I HOPE is gravid. I paired her on Thanksgiving and have noted some strange behavior. She isn't eating as much and staying hidden more. I am not giving up hope because I know people that paired P. Regalis and didn't think that it did anything but months later she laid a sack. All that I know is that P. Metallica is prone to eat their eggsacks. Pull it at like 7 days.
I found this...dont know for sure though
None that I know of, or rather all.Would you name a few of the better known species of Tarantulas who's females are known to eat their egg sac at the slightest bit of disturbance.