FIGURES 1–7 in The millipede genus Skleroprotopus Attems, 1901 (Diplopoda, Julida, Mongoliulidae) in China, with description of a new species

FIGURES 1–7. Skleroprotopus securifer sp. nov., male holotype (FSCB). 1. Distal part of antenna. 2. Antenna apex. 3. Midbody leg. 4. Leg 1, anterior view. 5. Leg 2 and penis, posterior view. 6. Terminal segment of leg 1, anterior view. 7. Claw of mid-body leg. Scales: 10 μm (Fig. 7), 20 μm (Figs 2, 6), 100 μm (Figs 1, 3, 4, 5).