Key to the Chinese Macrobathra species based on external characters and male genitalia

1 Forewing with metallic luster (Fig. 1)...................................................... M. micacea sp. nov. Forewing without metallic luster......................................................................... 2

2 Forewing with a relatively narrow fascia, two costal spots and one tornal spot..................................... 3 Forewing with a distinct broad fascia, lacking a tornal spot................................................... 10

3 Right valva produced on inner margin..................................................................... 4 Right valva not produced............................................................................... 5

4 Anellus trapezoidal (Fig. 19)......................................................... M. aequidistans sp. nov. Anellus square on dorsal surface, widely band-shaped on ventral surface (Fig. 23).......................... M. nomaea

5 Left brachium of socius dilated distally.................................................................... 6 Left and right brachia of socius dilated distally.............................................................. 7

6 Left valva with distal half inflated elliptically (Fig. 20)......................................... M. afflata sp. nov. Left valva uniformly wide (Fig. 25)..................................................... M. solidilatata sp. nov.

7 Right valva with a denticle on inner margin (Fig. 24)................................................. M. petalitis Right valva without a denticle........................................................................... 8

8 Socius asymmetrical (Fig. 22)................................................................. M. myrocoma Socius symmetrical.................................................................................... 9

9 Right valva with a triangular plate (Fig. 26)............................................ M. trigonilamella sp. nov. Right valva without a plate (Fig. 21).............................................................. M. arneutis

10 Anellus without a process (Fig. 29)............................................................... M. flavidus Anellus with a process................................................................................ 11

11 Valva symmetrical (Fig. 27).......................................................... M. baculiformis sp. nov. Valva asymmetrical.................................................................................. 12

12 Tegumen without a process laterally..................................................................... 13 Tegumen with a process laterally........................................................................ 14

13 Anellus with a process (Fig. 32)....................................................... M. reticulatistria sp. nov. Anellus with three processes (Fig. 33).................................................. M. terniprocessa sp. nov.

14 Tegumen with a triangular process on right margin (Fig. 28).................................. M. bipunciata sp. nov. Tegumen with an elongate process on right margin.......................................................... 15

15 Left valvella with distal 1/3 broadened elliptically (Fig. 31)............................................ M. quercea Left valvella aequilate (Fig. 30)............................................................. M. latipterophora