Figures 31–40.Stenus zhangdinghengi 31 male sternite VIII 32 male sternite IX 33 male tergite IX, X 34 aedeagus in ventral view 35 apex of aedeagus 36 expulsion hooks 37 female sternite VIII 38 female tergite IX, X 39 valvifers and spermatheca 40 spermatheca. Scales = 0.1 mm (35–36, 40), scales = 0.25 mm (31–34, 37–39).