South Asian river dolphin display the variances needed to support their classification as separate species. Thus, at present, a single species with two subspecies is recognized in the genus "Platanista", "P. g. gangetica" (Ganges river dolphin) and "P. g. minor" (Indus river dolphin). An assessment of divergence rates in mitochondrial DNA of the two subspecies indicates that they diverged from a common ancestor around 550,000 years ago. This ancestor is thought to have been a marine Platanistid inhabiting the epi-continental seas in South Asia during the sea level rises in the middle Miocene. The earliest fossil identified as belonging to the species is only
Protogoniomorpha parhassus with black. There are black spots near the margins of both the forewings and hindwings. The underside of the wings has a greenish-white base colour, with eyespots corresponding to those on the upper surface. This species lays tiny eggs similar to those of "Junonia" and "Precis" species. The larvae are similar to those of "Junonia" and "Precis" species, but larger. They feed on "Asystasia" ("A. gangetica"), "Brillantaisia", "Isoglossa" ("I. woodii" and "I. mossambicensis" ), "Mimulopsis", and "Paulowilhelmia" species. The pupae are similar to those of "Junonia" and "Precis" species, but larger. The flight period of the adults is year round,