Rhochmopterum, Speiser, 1910

Key to species of Rhochmopterum View in CoL from the Oriental region (modified after Hardy and Drew (1996))

1. Wing with rays in cell r 1 with white filling................................................................. 2

- Wing with rays in cell r 1 without white filling............................................................... 3

2. Abdomen predominantly brownish yellow, tergite 5 of male dull black, microtrichose on basal half, polished black apically....................................................................... Rhochmopterum tribullosum (Hering) View in CoL

- Abdomen predominantly yellow, tergite 5 of male polished black, without microtrichose............ R. melanurum (Bezzi) View in CoL

3. Mesonotum with a broad white microtrichose band extending down middle, continuous over scutellum, abdomen yellow down middle, continuous over last tergite of male and female, broadly brown on sides.................. R. seniorwhitei (Bezzi) View in CoL

- Mesonotum even white to grey microtrichose, not extending to scutellum, abdomen yellow to brown not continuous over last tergite of male and female...............................................................................4

4. Wing with the dark central area reduced and confined within the r-m and dm-cu crossveins........... R. centralis (Hendel) View in CoL

- Wing with dark central area broad, extended beyond crossveins ( Figs 6, 7 View FIGURES 3–7 , 22 View FIGURES 22–23 , 36 View FIGURES 36 , 38 View FIGURES38 )............................... 5

5. First ray in cell r 1 vestigial or lacking; last ray in cell r 1 brown without hyaline base ( Fig. 22 View FIGURES 22–23 )........... R. parvum (Hardy) View in CoL

- First ray in cell r 1 prominent/ well developed; second and third rays in cell r 1 brown with hyaline base ( Figs 6, 7 View FIGURES 3–7 , 36 View FIGURES 36 , 38 View FIGURES38 )... 6

6. First ray in cell r 2+3 curved, separated from third ray in cell r 1 by a distance of 2.75× the width of crossvein r-m, apical longitudinal band in cell r 4+5 strongly connected to band along vein M ( Figs 1, 2 View FIGURES 1–2 , 6, 7 View FIGURES 3–7 ), aculeus without apical notch ( Figs 16, 16a, 17, 17a View FIGURES 14–21 ), glans of phallus broad with bifid apex ( Figs 13, 13a View FIGURES 11–13 )......... R. malaviyai Nikhil, David & Hancock sp. nov.

- First ray in cell r 2+3 nearly straight, separated from third ray in cell r 1 by a distance of 1.5×−1.75× the width of crossvein r-m, apical longitudinal band in cell r 4+5 weakly connected to/separated from band along vein M ( Figs 24, 25 View FIGURES 24–25 , 36 View FIGURES 36 , 38 View FIGURES38 ), aculeus with apical notch ( Figs 30, 30a View FIGURES 26–34 ), glans of phallus trumpetiform ( Figs 28, 28a View FIGURES 26–34 )..................... R. venustum (de Meijere) View in CoL