Well...
These are two pics of two different females. The one with the regenerated tail is an offspring from the female with the full tail.
As you can see, these animals have a quite distinct female bulge. The female bulge is spherical and single-lobed in comparison to the bulge of a guentheri male. The bulge of the males is quite large and distinct. I would describe it as bi-lobed, in that the most conspicuous area is aft the vent and graduates into a secondary bulge.
I woke late this morning, so I was unable to snap all the shots I wanted, will amend this thread with pictures as Im able.