Key to the male of Eupolyphaga species

1 Tegmina totally unicolored (Figs. 11 A; 12 E)............................................................... 2 - Tegmina more or less maculated.......................................................................... 3 2 Pronotum generally unicolored (Fig. 13 P)............................................................ E. fusca - Pronotum anterior distinctly marginated (Fig. 12 I)...................................................... E. sp. 3 3 Tegmina brown, only with several hyaline maculae, vertex of head yellow (Figs. 12 A; 13 N).................. E. robusta

- Ground color of tegmina hyaline, strongly maculated......................................................... 4

4 Tegmina short, only beyond the end of abdomen about 3.4–6.5 mm .............................................. 5

- Tegmina long, exceeded the end of abdomen more than 8.0 mm................................................. 6

5 Abdomen brown (Fig. 7 E), distributed around Mt. Everest................................. E. everestiana everestiana

- Abdomen yellow, distal portion slightly dark brownish (Fig. 7 K), distributed in Lhoka................ E. everestiana reni

6 Both abdomen and legs pale yellow...................................................................... 11

- Not as above......................................................................................... 7

7 Abdomen maculated, median with a longitudinal line........................................................ 10

- Abdomen not maculated................................................................................ 8

8 Pronotum generally unicolored........................................................................... 9

- Pronotum marginated anteriorly......................................................................... 15

9 Tegmina with dense and mixed maculae (Fig. 5 A)................................................ E. hupingensis

- Tegmina with scattered maculae, outer margins brownish (Fig. 9 F)....................................... E. xuorum

10 Pronotum brown to dark brown, anterior yellowish marginated................................................. 12

- Pronotum yellow, disc with an irregular brown marking (Fig. 15 G)..................................... E. maculata

11 Pronotum with anterior yellow (Fig. 13 A).......................................................... E. sinensis

- Pronotum generally unicolored, reddish brown to brown (Fig. 13 G)....................................... E. hanae

12 Pronotum brown, with a very weak yellowish margin anteriorly; tegmina with outer base brownish, maculae very fine and scattered (Fig. 15 P; 9 A)......................................................................... E. dongi

- Pronotum brown, anterior margin muddy yellowish.......................................................... 13

13 Legs black (Fig. 10 D).......................................................................... E. nigrifera

- Legs brown to dark brown, distinctly yellowish mixed....................................................... 14

14 Body brown, tegmina with dense maculae (Fig. 10 G–H).................................... E. fengi yongshengensis

- Body dark brown, tegmina with loose maculae (Fig. 10 E–F)......................................... E. fengi fengi

15 Interocular space as wide as the distance between ocelli (Fig. 14 E–F)................................... E. thibetana

- Interocular space narrower than the distance between ocelli................................................... 16

16 Tegmina with scattered spots........................................................................... 17

- Tegmina with dense or mixed speckles.................................................................... 18

17 Body dark brown to black, anterior of pronotum white narrowly............................................... 20

- Body yellowish brown, anterior of pronotum whitish yellow widely (Figs. 6 J–M; 14 A).................. E. yunnanensis

18 Tegmina with dim and small maculae, pronotum with a yellow anterior margin not reach to the lateral borders, body black ventrally (Figs. 8 E–F; 16 D).................................................................... E. daweishana

- Tegmina with mixed maculae, body brown ventrally......................................................... 19

19 Pronotum with anterior margin yellow, apex of the yellow area narrow, widened toward lateral (Fig. 13 D).. E. shennongensis

- Pronotum with anterior margin whitish yellow, apex of the yellow area narrow, then widened near the apex, and becoming much narrower toward the lateral borders (Fig. 14 P)............................................... E. hengduana

20 Body dark brown, maculae on tegmina larger, fewer......................................................... 21

- Body black, maculae on tegmina smaller, relatively denser (Fig. 8 I–J)................................. E. nigrinotum

21 Body large, 17.8–20.1 mm not including tegmina, pronotum setose, the yellowish anterior margin indistinct or narrow (Fig. 16 G)............................................................................................. E. wooi

- Body small, 15.6–16.8 mm not including tegmina, pronotum and head with very long hair, with a distinct yellowish margin anteriorly (Fig. 14 J–L)........................................................................... E. pilosa