Choerades nigrescens (Ricardo, 1925) Loodt, 1977

Loodt, J. G. H., 1977, Afrotropical Asilidae (Diptera) 1. The genus Choerades Walker, 1851 and the descriptions of two new genera, Nannolaphria and Notiolaphria, from southern Africa and Malagasy Republic *, ANNALS OF THE NATAL MUSEUM 23, pp. 43-55 : 47

Choerades nigrescens (Ricardo, 1925) comb. n. Fig. 4

Laphria nigrescens Ricardo, 1925 pp. 279-80

This distinctive species was originally described from Malawi. The male terminalia ( Fig. 4 ) have not been adequately described before.

Fused gonopodal setae (4 in each group) short, straight and inwardly directed. Inner setae shorter than outer setae giving the fused group a characteristic shape ( Fig. 4 ). Distal processes of gonopods blunt and inwardly directed.

Material examined: MOZAMBIQUE: 1♀ Marromeu , Lower Zambezi River, Salone Forest, XII. 1959, Stuckenberg (Natal Mus.) . SOUTH AFRICA: Natal: 1♂ 1♀ Manguzi River , near Maputa, XI-XII. 1945, H. W. Bell Marley (Durban Mus.) ; 3♀ 16 km. N. Josini, X1. I971, M. E. & B. J. Irwin, dry forest, 246 m elevation (Natal Mus.)

Figures

Figs 1-5. Choerades species; dorsal aspect of cr genital bulb 1. C. aureopilosa (Ricardo). 2. C. bella (Loew). 3. C. jlavipes (Weidemann). 4. C. nigrescens (Ricardo) 5. C. serpentina (Bezzi).