Amiet (2004) believes that this is probably a complex of at least three species. Herrmann (2005) documented various morphs of a possible new species. Color morph 1 differs from P. sandersoni by a white stripe which extends from the tip of the snot, over the upper lip, ending above the arm. Color morph 2 has dark-brown to black dorsal coloration with two dorso-lateral white-grey stripes; this morph was reported by Amiet (1975) for the western flank of Mt. Nlanako at 950-1000 m. Color morph 3 has dark-brown to black dorsal coloration with two light, broad, irregular shaped spots of greenish or reddish coloration; this morph was reported by Amiet (1975) for Ekomtolo. Color morph 4 has a broad, light red, longitudinal stripe on the dorsum.