1. Pale scorpions, yellowish to reddish-yellow, with or without spots.............. 2

– Dark scorpions with confluent blackish spots over the body and appendages........................................................................................... P. maculatus (Fig. 2)

2. Coloration yellowish without any spots; pectinal tooth count 18/20.............................................................................................. P. betschi (Figs 9–10)

– Coloration yellowish with two or four longitudinal reddish-brown stripes over the tergites; pectinal tooth count 14/16.............................................. 3

3. Two longitudinal brownish stripes over the tergites; carapace, pedipalps and metasomal segments without spots........................ P. pidgeoni (Figs 11–12)

– Four longitudinal brownish stripes over the tergites; carapace, pedipalps and metasomal segments strongly spotted....................... P. lalyae sp. n. (Fig. 1)