Key to species of the genus Phlugiolopsis Zeuner

1 Pronotum with blackish lateral lobes...................................................................... 2

- Pronotum with pale lateral lobes.......................................................................... 3

2 Cerci of male with long inner branch at base (Fig. 2); subgenital plate of female with roundly triangular hind margin (Fig. 3)............................................................................... P. grahami (Tinkham, 1944)

- Cerci of male without inner branch at base (Fig. 5); subgenital plate of female with rounded hind margin (Fig. 6).................................................................................... P. jinyunensis (Shi et Zheng, 1994)

3 Tegmina extending beyond the hind margin of pronotum...................................................... 4

- Tegmina extending beyond the hind margin of pronotum..................................................... 11

4 Male cerci hardly excavated on inner surface of basal half, with 3 branches or lobes................................ 5

- Male cerci distinctly excavated on inner surface of basal half, with 1–2 branches or lobes............................ 7

5 Male cerci shorter, apical half angularly curved and bifurcate (Fig. 7); subgenital plate of female with apex deeply notched (Fig. 10)............................................................................ P. chayuensis sp. nov.

- Male cerci longer, apical half gradually curved and not bifurcate; subgenital plate of female with apex not notched........6

6 Cerci of male with the upper branches nearly triangular, apex of cerci obliquely truncate (Figs. 11); male subgenital plate with styli (Fig.13); subgenital plate of female with rounded middle lobe and distinct lateral concave (Fig. 14)................................................................................................... P. ramosissima sp. nov.

- Cerci of male the upper basal lobe long finger-shaped, apex of cerci obtuse (Figs. 15); subgenital plate without styli (Fig. 17); subgenital plate with hind margin broadly rounded and with a depression at both sides (Fig. 18)...... P. longicerca sp. nov.

7 Male cerci with a long inner branch at middle and with truncate apex (Fig. 19); subgenital plate of female with 3 keels (Fig.22)............................................................................... P. minuta (Tinkham, 1943)

- Cerci of male and subgenital plate of female not as above...................................................... 8

8 Male cerci with inner upper lobe with projecting apical angle (Fig. 23), lower lobe with truncate apex, apical half of cerci com- pressed, with oblique truncate apex (Fig. 24); hind margin of female subgenital plate with 3 lobes, middle lobe longer than lat- eral lobes, broadly rounded, with an oblique keel near lateral lobes (Fig. 26)...................... P. vietnamica sp. nov.

- Male cerci and female subgenital plate not as above.......................................................... 9

9 Legs with dark brown spots; cerci of male with finger-shape upper lobe and rounded lower lobe at base (Figs. 28–30)............................................................................................ P. punctata sp. nov.

- Legs without dark brown spots; cerci of male without finger-shape upper lobe..................................... 10

10 10th abdominal tergite of male shallowly concave (Fig. 31); subgenital plate of female with a pointed median projection (Fig. 34)............................................................................. P. brevis Hsia et Liu, 1993

- 10th abdominal tergite of male with a deep “V” median notch (Fig. 35); subgenital plate of female with hind margin slightly concave (Fig. 39)............................................................. P. tuberculata Hsia et Liu, 1993

11 Male cerci with hooked apex (Fig. 41).................................................................... 12

- Male cerci without hooked apex......................................................................... 14

12 Subgenital plate of male with parallel lateral margins in apical half (Fig. 43); 8th abdominal tergite of female with a tubercle on each side (Fig. 44); subgenital plate of female nearly hexagon (Fig. 45)............................ P. montana sp. nov.

- Subgenital plate of male not as above; 8th abdominal tergite of female without tubercle.............................. 13

13 Upper lobe of male cerci rounded (Fig. 46); subgenital plate of female with rounded hind margin(Fig. 49)........................................................................................... P. mistshenkoi (Gorochov,1993)

- Upper lobe of male cerci with acute apical corner (Fig. 50); subgenital plate of female butterfly-shaped (Fig. 51)...................................................................................... P. yunnanensis Shi et Ou, 2005

14 Male cerci gently incurved and with internal tooth........................................................... 15

- Male cerci almost straight or apex incurved only, without internal tooth.......................................... 16

15 Subgential plate of female with subangular median lobe (Fig. 52), apex truncate or excised; male cerci gently incurved and with internal tooth (Fig. 53)............................................................ P. henryi Zeuner, 1940

- Subgential plate of female with broad rounded median lobe and shallowly notched (Fig. 55).......... .. P. c a r i n a t a sp. nov.

16 Male cerci with apex strongly incurved and triangular (Fig. 56); subgential plate of female with hind margin nearly triangular, apex notched, lateral margin straight and with a short keel (Fig. 59)............................... P. ventralis sp. nov.

- Male cerci almost straight, apical pointed (Fig. 60–62); subgenital plate of female with hind margin widely rounded and hardly concave medially (Fig. 63)..................................................... P. yaeyamensis Yamasaki, 1986