Key to species of the puncticulata species-group based on male genitalia

1 Valva with two processes on ventral margin (Fig. 21)........................................ M. biprocessa sp. nov.

- Valva without a process on ventral margin.................................................................. 2

2 Valva with a short ventroapical spine (Fig. 24).............................................. M. globulosa sp. nov.

- Valva without such a spine.............................................................................. 3

3 Valva with one or two spines on ventral margin............................................................. 4

- Valva without a spine on ventral margin................................................................... 5

4 Valva with a spine on ventral margin, sacculus with two stout horn-shaped apical processes (Fig. 27)... M. unijugata sp. nov.

- Valva with two spines on ventral margin, sacculus with a semielliptical apical process (Zhu et al. 2020: Fig. 35).................................................................................................. M. robustispina

5 Sacculus bilobed distally (Fig. 23)...................................................... M. dilatilobata sp. nov.

- Sacculus not bilobed distally............................................................................ 6

6 Ventral margin of valva without an ovate setose pad.......................................................... 7

- Ventral margin of valva with an ovate setose pad........................................................... 10

7 Cornutus absent...................................................................................... 8

- Cornutus present...................................................................................... 9

8 Uncus slenderly elongate (Fig. 20)..................................................... M. basitriangula sp. nov.

- Uncus conical (Zhu et al. 2020: Fig. 33)............................................................ M. conica

9 Cornutus being a large spine, saccus as long as uncus (Zhu et al. 2020: Fig. 34)........................ M. puncticulata

- Cornuti being a narrow row and a large patch of spines, saccus shorter than uncus (Fig. 26)............ M. sinuata sp. nov.

10 Aedeagus with several spines........................................................................... 11

- Aedeagus with a spine (Fig. 25)........................................................... M. prospina sp. nov.

11 Valva right-angled at basal 1/4 on ventral margin (Wang 2006b: Fig. 216)................................. M. leishana

- Valva not angled on ventral margin...................................................................... 12

12 Apex of sacculus with a sub-digitate process (Fig. 22)..................................... M. curvicornuta sp. nov.

- Apex of sacculus with a rectangular plate (Wang 2006a: Fig. 15).......................................... M. sticta