Phileurus valgus antillarum: 20,XY (Fig. 2 B)
Published data: Dutrillaux & Dutrillaux (2012). All the autosomes are meta-/sub-metacentric. The size of autosomes 2-8 is progessively decreasing, pair no. 1 is large and pair no. 9 quite small. The X is a small metacentric and the Y is punctiform. NOR location: X chromosome.