Bolitogyrus electus Smetana & Zheng (A, B, D, F, H), B. uncus Cai et al. (C, E, G, I), B. confusus Brunke (J–L), B. huanghaoi Hu et al. (M–O) and B. nigropolitus Smetana (P, Q). Aedeagus in parameral view (A, J, M), median lobe in lateral view (B, C, N, P), peg setae of paramere (D, K, O, Q), apex of paramere in lateral (F, G, L) and parameral view (E), apex of median lobe in parameral view (H, I). Figure 8E modified from Cai et al. (2015). Scale bars: 0.5 mm (A–C, E–J, L–N, P), 0.1 mm (D, K, O, Q).