Oriental

Key to Oriental Nitela (modified from Li & Li 2010)

(Males of N. apoensis Tsuneki , N. protuberancis Li & Li , N. bicornis Williams , N. williamsi Menke , and N. domestica Williams are unknown).

1. Setae on lower frons and clypeus golden................................................................... 2

- Setae on lower frons and clypeus silvery (except setae on clypeus golden in males of N. pseudocollaris & N. neoapoensis ). 3

2. Scutellum without median transverse protuberance. Sri Lanka............................... N. henrici Turner, 1926 View in CoL

- Scutellum with median transverse protuberance (See Figure 3 View FIGURES 1–8 of Li & Li 2010). China..... N. protuberancis Li & Li, 2010 View in CoL

3. Antero-lateral angle of pronotum acutely pointed or pronotum approximately rectangular ( Figs. 4 View FIGURES 1–8 , 12 View FIGURES 9–15 & 35 View FIGURES 32–39 )............. 4

- Antero-lateral angle of pronotum not acutely pointed, or pronotum approximately rounded ( Figs 19 View FIGURES 16–23 & 27 View FIGURES 24–31 )............... 9

4. Mesoscutum transversely or irregularly transversely ridged ( Figs 4 View FIGURES 1–8 , 12 View FIGURES 9–15 , 46 View FIGURES 43–50 & 54 View FIGURES 51–58 )................................... 5

- Mesoscutum reticulate ( Figs 35 View FIGURES 32–39 & 40 View FIGURES 40–42 )..................................................................... 7

5. Mesoscutal ridges irregularly transverse ( Figs 46 View FIGURES 43–50 & 54 View FIGURES 51–58 ). India...... N. pseudocollaris Mawadda & Girish Kumar , sp. nov.

- Mesoscutal ridges distinctly transverse ( Figs 4 View FIGURES 1–8 & 12 View FIGURES 9–15 )......................................................... 6

6. Pronotum with broad transverse groove, anterior angles rectangular, anterior margin conspicuously raised ( Fig. 12 View FIGURES 9–15 ). China; India; Malaysia; Sri Lanka........................................................... N. collaris Turner, 1926 View in CoL

- Pronotum only posteromedially depressed, anterior angles not rectangular, anterior margin not raised. Philippines........................................................................................ N. bicornis Williams, 1928 View in CoL

7. Posterior declivity of propodeum nearly straight; in female, clypeus tridentate anteromedially. Philippines............................................................................................... N. rugosa Williams, 1928 View in CoL

- Posterior declivity of propodeum with heart shaped structure ( Figs 36 View FIGURES 32–39 & 40 View FIGURES 40–42 ); in female, clypeus approximately quadridentate anteromedially ( Figs 34 View FIGURES 32–39 & 42 View FIGURES 40–42 )........................................................................... 8

8. Mesoscutum conspicuously coarsely reticulate ( Fig. 35 View FIGURES 32–39 ); propodeal dorsum longitudinally striatorugose ( Fig. 35 View FIGURES 32–39 ); in male, setae on clypeus golden. India.................................. N. neoapoensis Mawadda, Girish Kumar sp. nov.

- Mesoscutum inconspicuously reticulate ( Fig. 40 View FIGURES 40–42 ); propodeal dorsum longitudinally ridged, not striatorugose; male unknown. Philippines..................................................................... N. apoensis Tsuneki, 1992 View in CoL

9. Frons with bifurcate carina ( Fig. 17 View FIGURES 16–23 )..................................................................... 10

- Frons without bifurcate carina ( Fig. 25 View FIGURES 24–31 )................................................................... 11

10. Dorsal arms of frontal carina long, parallel, extending nearly up to anterior ocellus; eyes glabrous; carina delimiting posterior surface of propodeum dipping down medio dorsally suggesting the top of heart shaped structure; recurrent vein of forewing with stub of vein just before its juncture with submarginal cell (See Figure 1 View FIGURES 1–8 of Menke 1968). Malaysia................................................................................................. N. williamsi Menke, 1968 View in CoL

- Dorsal arms of frontal carina short, unparallel, extending nearly up to half distance to anterior ocellus ( Fig. 17 View FIGURES 16–23 ); eyes with short, sparse pubescence; carina delimiting posterior surface of propodeum straight ( Fig. 20 View FIGURES 16–23 ); recurrent vein of forewing without stub of vein near juncture with submarginal cell ( Fig. 22 View FIGURES 16–23 ). China; India (present study); Japan; Philippines; Taiwan........................................................................................ N. domestica Williams, 1928 View in CoL

11. Posterior margin of mesoscutum with transverse row of six conspicuous pits. Philippines..... N. philippinica Tsuneki, 1992 View in CoL

- Posterior margin of mesoscutum with some longitudinal ridges or with a few inconspicuous pits...................... 12

12. Anterior margin of scutellum with short longitudinal ridges or with somewhat inconspicuous pits..................... 13

- Anterior margin of scutellum with transverse row of conspicuous pits........................................... 14

13. Pronotum medially with V-shaped extension and laterally depressed on posterior ridge; ridges on propodeal dorsum scattered and oblique, connected by short and transverse ridges making the surface approximately reticulate. China......................................................................................... N. obliquipropodea Li &Li, 2010 View in CoL

- Pronotum medially without V-shaped protraction; ridges on propodeal dorsum comparatively denser and longitudinal connected by rather short and inconspicuous transverse ridges, making the surface inconspicuously reticulate. China..................................................................................... N. yasumatsui taiwana Tsuneki, 1956 View in CoL

14. Mesoscutum and scutellum with transverse ridges. Philippines.......................... N. luzonensis Williams, 1928 View in CoL

- Mesoscutum and scutellum without transverse ridges........................................................ 15

15. Posterior ocellus at least 1.5 × its diameter from eye. Indonesia.............................. N. maxima Maidl, 1925 View in CoL

- Posterior ocellus almost touching eye.................................................................... 16

16. Pronotum with transverse groove, divided in the middle by low carina. Cocos Islands; Malaysia. N. pendleburyi Turner, 1926 View in CoL

- Pronotum without transverse groove, not divided in the middle by carina ( Fig. 27 View FIGURES 24–31 ). India............................................................................................. N. nasseri Mawadda, Girish Kumar sp. nov.