Holotype of Callistethus rachelae (Arrow, 1917). 10–12 habitus 10 dorsal view 11 ventral view 12 lateral view from left 13 head and pronotum 14 propygidium and pygidium 15–17 aedeagus 15 dorsal view 16 lateral view from right 17 ventral view 18 label. Key: Sc. 1. Scale bars: 5 mm (10–12); Sc. 2, 5 mm (13, 14); Sc. 3, 1 mm (15–17).