In P. schultei 20 metaphase plates contained 44 chromosomes (44,XX) and two of them contained 43 chromosomes (43,X0). The female karyotype of P. schultei consisted of two pairs of large metacentrics, one pair of medium metacentrics and one pair of large submetacentrics. Remaining chromosomes were medium and small submetacentrics and acrocentrics. In contrast to the female, the male karyotype contained only three large metacentrics, suggesting that the X chromosome in this species is the large metacentric. Small pericentric and telomeric C-positive regions were found in all large metacentrics (Figure 6a). The medium sized metacentric contained large pericentric C-positive region in the short arm and small C-positive region in the terminal position of the long arm. The large submetacentric had a C-positive short arm, and in the long arm, there were a large pericentric C-band and a small C-band in the terminal position. Other chromosomes showed large pericentric C-positive regions (Figure 6a).