Coenosia nodosa Stein, 1913

(Figs 13–15)

Diagnosis. Frons subparallel to vertex; fronto-orbital plate differentiated from the frons by paler pollinosity; scutellum with both pairs of setae, one basal and one apical; haltere with the knob dark brown; legs brown; hind tibia without a distinct posterodorsal seta. Sternite 5 as in Fig. 13.

Male terminalia. Cercal plate with two protuberances on basal lateral margin; surstylus short (Fig. 14). Aedeagal complexas in Fig. 15; aedeagal apomen very long.

Material examined. ANGOLA: (A6), Tundavala, 9 mls. NW. Sa da Bandeira, 23.ii. 1972 / Southern African Exp., B.M.1972-1, 3 males (1 MNRJ), 4 females (1 MNRJ)

Notes. This species is included in the C. semifumosa -group. It is easily identified with Emden’s (1940) key by the colour of the haltere and the colour of the legs.

Geographical distribution. South Africa, Angola.