Aphantorhaphopsis Townsend 1926

Key to East Asian and Oriental species of Aphantorhaphopsis

1 Abdomen shining black in ground color (Figs 86–87); abdominal tergite 3 without median marginal setae..... 2

– Abdomen yellowish, brownish or blackish in ground color (Figs 88–91, 95); abdominal tergite 3 with a pair of median marginal setae.......................................... 3

2 R 1 setulose dorsally on entire length........................................................................ S. (A.) expleta sp. nov.

– R 1 setulose dorsally on apical half......................................................... S. (A.) perispoliata (Mesnil, 1953)

3 Labella pad-like (Figs 88, 90, 98)............................ 4

– Labella elongate, 0.8–1.0 times as long as prementum (Figs 94–96)........................................................... 15

4 R 1 setulose dorsally on apical half............................ 5

– R 1 bare or with 1–3 setulae dorsally on apical portion................................................................................ 7

5 Three postsutural dorsocentral setae........................ 6

– Four postsutural dorsocentral setae............................................................. S. (A.) hongkongensis sp. nov.

6 Abdomen shining light brown in ground color, with whitish pruinosity on anterior margin of each tergite; gena wide, approximately 0.25 of eye height (Fig. 92); ultimate section of M 4 0.8–1.0 times as long as crossvein dm-m.............. S. (A.) samarensis (Villeneuve, 1921)

– Abdomen yellow in ground color, almost without pruinosity, posterior half of tergites 3–5 black; gena narrow, approximately 0.2 of eye height; ultimate section of M 4 1.3 times as long as crossvein dm-m......................................................... S. (A.) seminigra sp. nov.

7 Three postsutural dorsocentral setae........................ 8

– Four postsutural dorsocentral setae........................ 14

8 Vertex very narrow, approximately 0.17 of head width.............. S. (A.) angustifrons (Malloch, 1930)

– Vertex 0.30–0.45 of head width................................ 9

9 Abdomen orange or light yellow in ground color, without pruinosity................................................... 10

– Abdomen varied in ground color, with pruinosity.... 11

10 Fronto-orbital plate with yellow pruinosity; frontal vitta orange; vertex approximately 0.32 of head width; gena 0.17–0.20 of eye height (Fig. 93)............................................................. S. (A.) selangor (Malloch, 1930)

– Fronto-orbital plate with brownish pruinosity; frontal vitta pale brown; vertex 0.33–0.37 of head width; gena 0.20–0.23 of eye height (Fig. 90)................................................................. S. (A.) laboriosa Mesnil, 1957

11 Abdominal tergites 4–5 entirely blackish, with whitish gray pruinosity on anterior part (Fig. 89)............................................................. S. (A.) kanmiyai sp. nov.

– Abdominal tergites 4–5 brownish or yellowish in ground color, with blackish longitudinal vitta or bands on posterior 1/2–4/5 (Fig. 88)................................. 12

12 Fronto-orbital plate with brownish pruinosity; frontal vitta reddish brown; thoracic dorsum slightly dark gray...................................... S. (A.) coactilis sp. nov.

– Fronto-orbital plate with yellowish pruinosity; frontal vitta orange or light yellow; thoracic dorsum gray........ 13

13 Male postabdomen with surstylus nearly straight and tapered to apex in lateral view (Fig. 63)............................................... S. (A.) orientalis (Townsend, 1926)

– Surstylus thickened and slightly curved dorsally on apical 1/ 5 in lateral view (Fig. 25)................................................................... S. (A.) matsumotoi sp. nov.

14 Abdomen blackish in ground color; gena approximately 0.25 of eye height; R 1 bare............................................................... S. (A.) laticornis (Malloch, 1930)

– Abdomen gray in ground color; gena approximately 0.18 of eye height (Fig. 97); R 1 with 1–3 setae dorsally on apical portion............. S. (A.) apicisetosa sp. nov.

15 Three postsutural dorsocentral setae; R 1 bare......... 16

– Four postsutural dorsocentral setae; R 1 bare or setulose dorsally on apical half............................................ 17

16 Prementum subequal in length to eye height; labella slightly shorter than prementum (Fig. 95)................................................ S. (A.) crassulata (Mesnil, 1953)

– Prementum long, approximately twice as long as eye height; labella subequal in length to prementum (Fig. 96).................................... S. (A.) nepalensis sp. nov.

17 R 1 setulose dorsally on apical half............................... ............................................ S. (A.) curvata sp. nov.

– R 1 bare.................................................................... 18

18 Labella elongate, subequal in length to prementum; gena narrow, approximately 0.15 of eye height (Fig. 94).............................. S. (A.) alticola (Mesnil, 1953)

– Labella approximately 0.8 times as long as prementum; gena wide, approximately 0.2 of eye height....... ................................................ S. (A.) curta sp. nov.