I don't know that there are any subspecies got hystrix. I've never had hystrix pups so I was just assuming they were similar to other pregnancies I've had where 3-4 months was the norm.
spotfin definitely has a lot more experience with breeding hystrix than I do and I will take his word for it.
Congrats! Nice looking female! What does the dad look like? How big is she?
As above, mine has always had long pregnancies. This last one was 190 days, and the one before was just over 200 days. I would guess you still have bit longer to go. Where this is her first litter, guessing she will have 2-3 pups.