Hemigymnochaeta Corti, 1895

Kurahashi, Hiromu & Kirk-Spriggs, Ashley H., 2006, The Calliphoridae of Namibia (Diptera: Oestroidea), Zootaxa 1322 (1), pp. 1-131 : 18

Key to species of Hemigymnochaeta Corti

1. Lower calypter yellowish brown, posterior margin concolorous.................................. 2

­ Lower calypter dark yellowish brown, with fuscous margin posteriorly...................... 6

2. Scutum with more or less pronounced dark pattern...................................................... 3

­ Scutum entirely orange or yellowish brown, without dark pattern ............................... 4

3. Scutum with pair of widely separated, usually distinct, black longitudinal stripes ........ .................................................................................................. H. varia (Hough) (p. 69)

­ Scutum with dark, more or less extended, single discal spot, at most a little indistinctly lightened in median area ..................................................... H. bequaerti Curran (p. 67)

4. Tergites 3–4 with distinct marginal band, often broader than width of 1 st flagellomere. ............................................................................................. H. bequaerti Curran (p. 67)

­ Tergites 3–4 without marginal band, but very rarely with trace of narrow marginal band ............................................................................................................................... 5

5. Postsutural dc 3; 4 th tergite with one strong lateral discal; 5 th tergite with complete row of 8–10 discals ( Fig. 7 ); smaller species, 6.0–7.0 mm in body length............................ ............................................................................................ H. trichaeta sp. nov. (p. 68)

­ Postsutural dc 4; 4 th tergite without strong lateral discals; 5 th tergite with only a few lateral bristles ( Fig. 8 ); medium­sized species, 7.0–8.5 mm in body length....................... .............................................................................................. H. unicolor (Bigot) (p. 68)

6. Scutum with pronounced dark pattern; 3 rd tergite with broad marginal band; tergites 4–5 largely or entirely blackish; genal dilation entirely clothed in black hairs ............ 7

­ Scutum usually without distinct dark pattern, rarely with more or less extended single discal spot; tergites 3–4 with rather broad marginal band; 5 th tergite entirely yellowish brown; genal dilation with patch of yellow hairs among black ones posteriorly............ ............................................................................................... H. maraisi sp. nov. (p. 67)

7. Scutellum with pronounced dark pattern ............................... H. laticeps Zumpt (p. 67)

­ Scutellum without pronounced dark pattern (not recorded from Namibia) .................... ............................................................................................................. H. liberia Curran

Figures

FIGURES 7–11. 7–8. Tergites 4–5 of abdomen of Hemigymnochaeta spp. 7. H. trichaeta sp. nov. ♂, dorsal aspect. 8. H. unicolor (Bigot) ♂, dorsal aspect. 9–11. Hind tarsi of Stegosoma spp., dorsal aspect. 9. S. bowdeni Peris ♂ (Ghana). 10. S. vinculatum Loew ♂ (Namibia). 11. S. wellmani Lichtwardt ♂ (Ghana). Not to scale.