Haven't been able to find a lot on this subject, but has anyone been able to successfully cross breed different species of jumping spiders? My Naphus Pulex male is getting older and iv'e never gotten him a female to breed with, however i do have a healthy female Phidippus Audax. I decided to house them together and so far I've seen several instances of mating behavior on his part where she seems interested, but was never able to look long enough to see any "successful" mating. My question is, if they were to mate, would them being two different genus affect the likelihood of fertile eggs? I've never attempted a cross breed so sorry if wrong terminology.