Here's a Southern Bell i came across down here in Kapiti region from one of our wetland sanctuaries,
Notice the frog is still absorbing its tail, but has distinctive bumps on its back. I would suspect there is a greater risk of hybridization more north where the two species inter mix. It is known to happen in Australia but is rare as they come from different regions, L.Raniformis South Australia and Tasmania, L.Aurea NSW. Unlike here wheres its more geographically insignificant. I would also expect that the Australians would have more knowledge in these species as they are native there and highly endangered.
Another photo with a L.Raniformis with no green dorsal line,