I understand your reluctance Ursual. But, as this is not a hybrid which we know can display features from other species, then in my unprofessional opinion it would have to display a very near likeness to other species located in the region.
As we have a list of the species found in Rio de Janeiro state, then we should be fairly confident it will be the one which looks most like it. I have searched several of the other genera found there, but not all, which is something I can do in order to come to the most likely conclusion. If I can do that, then it becomes a game of elimination.
