I think its even more complicated. Tokar suggested based on some pretty complicated morphological details that they were all the same and formally proposed to group the three into a single species. But, I dont think that the governing body of nomenclature (ICZN) has officially accepted his proposal yet. So, they may be both the same species and different. Ah, taxonomy 
Vinny
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“There is a grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that whilst this planet has gone on cycling according to the fixed laws of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.” -C. Darwin, 1859
