1 Pronotal disc with only 1 pair of black brown spots along anterior margin (Fig. 1 A, G); apical area of male cerci with 2 triangular spines (Fig. 2 B)............................................ Nigrimacula binotata Shi, Bian & Zhou sp. nov.
- Pronotal disc with 2 pairs of black brown spots (Figs. 3 A, F; 4 A, I; 5 A)........................................... 2
2 Male cerci simple, internal margin with only 1 small tooth (Fig. 3 C); apical area bifurcated in lateral view (Fig. 3 C–D)...................................................... Nigrimacula paraquadrinotata (Wang, Liu & Li, 2015) com. nov. Male cerci complex, with many teeth...................................................................... 3
3 Base of male cerci with 1 digitate process on interno-dorsal margin, its apex obtusely rounded (Jiao et al., 2013: Fig. 2 C–D); interno-ventral margin of subbasal area with 1 lamellar process, its apex dentiform, the process connecting with 5–6 small
spines (Jiao et al., 2013: Fig. 2 E–F); internal margin of apical area nearly rectangular expansion, its apex with 15–16 teeth (Jiao et al., 2013: Fig. 2 F). Female subgenital plate nearly trapezoidal, posterior margin almost straight (Fig. 6 D)................................................................... Nigrimacula xizangensis (Jiao & Shi, 2013) com. nov.
- Apical area of male cerci obviously longitudinal concave, forming a cavity; interno-dorsal margin with 1 lamellar process, its apex with 9 teeth; 1 cylindrical process connecting the lamellar process, its apex with 7 teeth; internal margin with 1 spatulate process bearing 15 apical teeth; interno-ventral margin with 1 oblique, lamellar lobe, its apex with 7 teeth (Fig. 4 C–H). Female subgenital plate pentagonal, lateral margin of basal half nearly straight, posterior margin round angular (Fig. 4 L).................................................................. Nigrimacula quadrinotata (Bey-Bienko, 1971) com. nov.