Key to species of the genus Macronotops

(Excluding the unnamed species from Xizang, China)

1 Length of clypeus almost equal to Width (Figs. 1–17); pronotum Without ridge (Figs. 203–220); proximal tooth of male protibia usually distinct (Figs. 24–25, 27, 29, 31, 33, 35, 37, 39)................................................. 2

- Length of clypeus greater than Width (Figs. 18–23); disc of pronotum With a narroW, longitudinal ridge medially (Figs. 221– 226); proximal tooth of male protibia usually indistinct (Figs. 42, 44, 46)........................................ 10

2 Elytron With a distal macula (Figs. 203–208, 219–220)........................................................ 3

- Elytron Without distal macula (Figs. 209–218)............................................................... 6

3 Protibia Without tiny teeth or the tiny teeth indistinct (Figs. 25–26, 39–40)........................................ 4

- Protibia With distinct tiny teeth (Figs. 24, 27–28)............................................................. 5

4 Body slender; pygidium usually With a yelloW macula (Figs. 94, 97), but macula absent in some specimens from Laos (Figs. 95–96); outer tooth of female metatibia absent (Fig. 64); median lobe of male genitalia filiform, shorter (Fig. 119)........................................................................... M. vuilleti (Bourgoin, 1916)

- Body Wider; pygidium Without yelloW macula (Figs. 74–75); outer tooth of female metatibia present (Fig. 50); median lobe of male genitalia ribbon-like, longer (Fig. 112)............................... M. dianensis Qiu, Xu & Chen, new species

5 Three large teeth of protibia longer (Fig. 24); pronotum With reddish-broWn and black setae (Fig. 135); median area of male abdomen clad With sparse setae (Fig. 136); setae on inner side of male metatibia denser (Figs. 135–136); length of dorsal tooth of male metatibia longer than basitarsus of metatarsus (Fig. 48); parameres longer (Fig. 111)............................................................................................. M. biserratus Qiu, Xu & Chen, new species

- Three large teeth of protibia shorter (Figs. 27–28); pronotum With fulvous setae (Figs. 141, 143); median area of male abdomen evenly clad With setae; setae on inner side of male metatibia sparser (Figs. 141–142); length of dorsal tooth of male metatibia shorter than basitarsus of metatarsus (Fig. 51); parameres shorter (Fig. 113)......... M. fulvoguttatus (Fairmaire, 1891)

6 Protibia With tiny teeth (Figs. 29–30, 33–36)................................................................ 7

- Protibia Without tiny teeth (Figs. 31–32, 37–38)............................................................. 9

7 Antenna yelloWish broWn (Figs. 12–13)............................ M. olivaceofuscus (Bourgoin, 1916) revised status

- Antenna dark broWn to black (Figs. 6–7, 10–11)............................................................. 8

8 Body larger, usually more than 16 mm in length; pronotum With dark broWn or black setae (Figs. 154, 156); pygidium usually With a yelloW macula (Figs. 86, 88), but absent in feW individuals (Figs. 87, 89); parameres longer and apex expanded (Fig. 116). TaiWan Island......................................................... M. nigropubescens (Mikšić, 1971)

- Body smaller, usually less than 16 mm in length; pronotum With fulvous setae (Figs. 145, 147–14 8, 150); pygidium Without yelloW macula (Figs. 80–83); parameres shorter and apex not expanded (Fig. 114). Asian mainland............................................................................................... M. fulvopilosus (Fairmaire, 1894)

9 Inner margin of metatibia in distal portion convex (Figs. 152, 154); angles betWeen large teeth of protibia acute (Figs. 31–32); membrane betWeen parameres distinct (Fig. 115)....................... M. miksici Qiu, Xu & Chen, new species

- Inner margin of metatibia in distal portion straight (Figs. 166, 168); angles betWeen large teeth of protibia right-angled or slightly arcuate (Figs. 37–38); male genitalia Without membrane (Fig. 118)............... M. sexmaculatus (Kraatz, 1894)

10 Antenna yelloWish broWn (Figs. 20–21); pygidium With a triangular yelloW macula (Figs. 102–103); parameres longer (Fig. 121)............................................................ M. medogensis Qiu, Xu & Chen, new species

- Antenna dark broWn (Figs. 18–19, 22–23); pygidium usually Without macula (Figs. 99, 101, 104–108); parameres shorter (Figs. 120, 122)...................................................................................... 11

11 All four yelloW maculae on elytron usually presented in male (Figs. 175, 177–178), but usually partly absent in female (Figs. 181–184); ventral surface of male abdominal sternites III–V sparsely clad With setiferous punctures near anterior margin (Fig. 176); parameres shorter, and anterior margin of apex nearly straight (Fig. 120)............. M. curvimarginatus (Ma, 1993)

- All four yelloW maculae on elytron usually presented in female (Figs. 197, 201–202), but usually partly absent in male (Figs. 191, 193–196); ventral surface of male abdominal sternites III–V glabrous near anterior margin (Fig. 192); parameres longer, and apex slightly rounded (Fig. 122)................................................. M. ovaliceps (ArroW, 1941)