Thanks so much for your reply! The site you recommended is great. I will try to upload more pictures to ID!!This site contains multiple pictures of D. diadema egg sacs of various stages, and info of how long it has taken for his eggs to hatch (it takes 3 to 6 months in general, apparently):
I assume yours is D. diadema as well, since D. variegatus is said to be rare in the hobby and only photos I've been able to find on internet are from different scientific sources or websites of amblypygid gurus who have probably originally obtained their animals for scientific research. If you manage to take pictures of the spination of pedipalp trochanters, it would be quite easy to identify whether you have D. diadema sold as D. variegatus or real D. variegatus.
I don't have personal observations of egg sacs of different ages but it seems like the eggs in your picture have already developed to some degree. The lighter coloured legs have already formed on at least some of the eggs, so maybe it won't take too long for them to hatch. I believe the egg sac will become more transparent and stretched before the whiplings are released though.
I would be really interested as well if someone with more experience of identifying different egg developmental stages could give more precise info
The word is there's no variegatus in the U.S. At least many claims of having variegatus proved otherwise or remained unproven as far as I know.
Another thing to consider- is this a recent acquisition? D. medius imports have been dominating the U.S. large ambypygi market for several years by now to the point they're the default answer however the seller labeled them as. Especially if the animal is of largish juvenile or adult size-other species are almost invariably sold as tiny captive bred babies. These(medius imports) used to be labeled as diadema/"Tanzanian whip spider" and occasionally as variegatus. As of lately I've been starting to see more correct labeling. or something strange as "Tanzanian whip spider, Damon medius". (medius are West African) A dorsal shot as mentioned above might help determine if she belongs to West or East African group and the trochanter pictures can help determine diadema or otherwise if she is indeed an East African sp.
They can be sensitive to disturbances while carrying their egg sacs, they can drop the sac if bothered or stressed. Would recommend not handling anymore. Also when you think they might be ready to hatch, add on another month or two. Or three. Better to be surprised than get concerned the eggs are seemingly taking way too long.. One sign of nearing hatch is when the sac seems to swell up and stretch.
Well Moriposa already mentioned that the they got the whip spiders in the "beginning of 2019" and this one has produced an egg sac which it didn't abandon right away. I think it's safe to assume that the whip spiders have been kept in proper conditions at this point. I remember reading from somewhere that taking care of egg carrying mother is tricky because the eggs will die if the moisture is often enough too high or too low. It sounds detrimental to cover up all the ventilation. It would be better to keep the relative humidity high but not 100%. How to achieve this depends on what kind of terrarium its being kept.Probably 3-4 months. Can you get a dorsal shot of her so we can confrim if it’s a medius? If it is indeed a medius(which it most likely is since I’ve yet to see a diadema imported), make sure to keep it nice and wet. Cover up ventilation holes, flood the substrate, etc or else she will die. They need a lot of moisture and after the first molt in captivity, she should be good with less water. Keep us updated on how she goes; I’m excited to see what happens!