Hi, I have a few questions as im now confused with my Hissers, last month one of them was drying an egg case, but later aborted it, after removing it I noticed there was quite a few more lying around half eaten can Hissers produce egg cases without mating? as Im not sure I have any males in the tank and if I do they dont have horns like the usual Hisser males do, I got them when they were small nymphs, so they cant have mated before I got them

If you have only females then that may be the reason for the abortions. Either way they're not going to produce young if they've never seen a male.