P. leiacanthus:

ZMA 112.671, syntype, 43.2 mm SL; Sumatra: Indragiri (Kwantan) River at Taluk. ZMA 112.672, syntype, 59.8 mm SL; Sumatra: Indragiri (Kwantan) River at Rengat. ZRC 46138 (11), 28.7-38.6 mm SL; Riau Archipelago: Pulau Bintan, 49 km to Tg. Pinang, 1°6'25.5"N 104°28'32.4"E.