Rhyncomya Robineau­Desvoidy, 1830

Kurahashi, Hiromu & Kirk-Spriggs, Ashley H., 2006, The Calliphoridae of Namibia (Diptera: Oestroidea), Zootaxa 1322 (1), pp. 1-131 : 26-28

Key to species of Rhyncomya Robineau­Desvoidy

There are at least 10 new species of the genus from Namibia and these shall be described and keyed elsewhere (Kurahashi & Kirk­Spriggs in prep.).

1. Proepisternum densely haired .................................................. R. dasyops Bezzi (p. 95)

­ Proepisternum bare........................................................................................................ 2

2. Presutural ac absent or very indistinct .......................................................................... 3

­ Presutural ac distinctly developed................................................................................. 4

3. Abdomen wholly metallic green or blue, practically devoid of pruinosity..................... ........................................................................................ R. messoria Villeneuve (p. 98)

­ Abdomen partly yellow or reddish (not recorded from Namibia) .................................. ......................................................................................................... R. elegantula ­group

4. Abdomen dark, blackish or metallic .............................................. R. buccalis ­group...5

­ Abdomen wholly or partly yellowish brown................................................................. 6

5. Thorax and abdomen metallic green or blue, with white pollinosity of varying density (not recorded from Namibia) ....................................................... R. buccalis Villeneuve

­ Thorax and abdomen metallic dark bronze (not recorded from Namibia)...................... ............................................................................................................. R. currani Zumpt

6. Mid tibia with 2–4 ad .................................................................................................... 7

­ Mid tibia with a single ad ............................................................................................ 13

7. Palpus entirely yellowish .............................................................................................. 8

­ Palpus blackish apically .............................................................................................. 12

8. Lower calypter ellipsoid, longer than broad; body 6.0–9.0 mm in length ...................... ........................................................................................ R. minutalis Villeneuve (p. 98)

­ Lower calypter lobulate, about as long as broad, or broader than long ........................ 9

9. Anepisternum clothed with black hairs at least on upper half, lower part with pale hairs (not recorded from Namibia) ............................................ R. maculata (Macquart)

­ Anepisternum entirely clothed in pale hairs, sometimes with several black hairs on upper extremity ........................................................................................................... 10

10. Parafacial entirely or largely blackish setulose; ♂ head sub­holoptic ......................... 11

­ Parafacial blackish setulose only on upper extremity; ♂ head holoptic.......................... ....................................................................................... R. interclusa Villeneuve (p. 98)

11. Parafacial and genal dilation without glossy black spot ................................................. ...................................................................................... R. discrepans Villeneuve (p. 95)

­ Parafacial and/or genal dilation with more or less distinct glossy spot (not recorded from Namibia) .................................................................................. R. paradoxa Zumpt

12. Abdomen predominantly metallic green, the ground colour of tergites 3–4 reddish brown laterally and ventrally; pedicel reddish; parafacial with dense black setulae (not recorded from Namibia) ........................................................................ R. formosa Peris

­ Abdomen predominately yellowish, with brown to blackish pattern; pedicel and 1 st flagellomere black, sometimes fuscous brown; parafacial without black setulae........... .................................................................................................... R. hessei Zumpt (p. 97)

13. Parafacial distinctly and mostly black setulose, rarely black setulae very sparse....... 14

­ Parafacial bare, or with only sparse and extremely fine, whitish hairs....................... 15

14. Thorax and dark pattern of abdomen metallic green; stem vein with white hairs .......... .......................................................................................... R. bicolor (Macquart) (p. 94)

­ Thorax and dark pattern of abdomen dull cupreous, sometimes with dull greenish reflection; stem vein with black hairs ............................ R. peraequa Villeneuve (p. 99)

15. Fronto­orbital plate in ♂ with long pilosity in addition to ori, in ♀ with dark piliferous spots ...................................................................................... R. soyauxi Karsch (p. 100)

­ Fronto­orbital plate in ♂ without additional pilosity, in ♀ without dark piliferous spots ..................................................................................................................................... 16

16. 5 th sternite of ♂ normal, without spines or protuberances ........................................... 17

­ 5 th sternite of ♂ modified, with prominences or spines ............................................... 20

17. Arista distinctly pubescent; abdomen orange­yellow, with lateral spot on tergites 3–4, sometimes on 5 th tergite in ♀ ( Fig. 12 ), only on 3 rd tergite in ♂ ...................................... ................................................................................................... R. tristis Séguy (p. 104)

­ Arista virtually bare, longest hairs barely attaining half diameter of basal arista; abdomen with marginal bands, without lateral spot ........................................................... 18

18. Thorax black, covered with dense bluish white pruinosity, apex of scutellum yellow... ...................................................................................... R. pruinosa Villeneuve (p. 100)

­ Thorax metallic green or cupreous, apex of scutellum not pale.................................. 19

19. Body length exceeding 9 mm; thorax metallic green and cupreous, with dense bluish pruinosity .............................................................................................R. io Peris (p. 98)

­ Body less than 6 mm; thorax metallic green or coppery, with white, moderately dense pruinosity ................................................................................... R. zumpti Peris (p. 105)

20. 5 th sternite of ♂ strikingly enlarged, lying opposite tergite 3–5, with pair of forceps­like protruding processes; 5 th tergite of ♀ ventrally with margins widely separated from each other, so that 5 th sternite is broadly uncovered ( Fig. 13 )......................................... ........................................................................................ R. forcipata Villeneuve (p. 95)

­ 5 th sternite of ♂ of normal size and lying opposite 5 th tergite; ♀ 5 th tergite ventrally broader leaving the corresponding sternite not so markedly uncovered..................... 21

21. 5 th sternite of ♂ projecting into two erect, coniform protuberances; 1 st flagellomere entirely orange­yellow ......................................................... R. cassotis (Walker) (p. 95)

­ 5 th sternite of ♂ equipped with 3–4 spines at base of each lateral lobe; 1 st flagellomere largely fuscous brown apically; legs wholly blackish, except for brownish mid tibia; 5 th sternite glossy black basally, broadly yellowish along posterior margin in ♀ ( Fig. 14 ) .................................................................................. R. trispina Villeneuve (p. 102)

Figures

FIGURES 12–14. Female abdomens of Rhyncomya spp., ventral aspect. 12. R. tristis Séguy. 13. R. forcipata Villeneuve. 14. R. trispina Villeneuve.