Coenosia nodosa Stein, 1913

Couri, Marcia S. & Pont, Adrian C., 2016, Coenosia Meigen (Diptera: Muscidae) from Angola: new species and records, Zootaxa 4103 (6), pp. 501-512 : 507

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.

Figures

FIGURES 10 – 18. (10 – 12) Coenosia macrochaeta (Emden), male: (10) sternite 5, dorsal view; (11) cercal plate and surstyli, dorsal view; (12) aedeagal complex, lateral view. (13 – 15) Coenosia nodosa Stein, male: (13) sternite 5, dorsal view; (14) cercal plate, dorsal view; (15) aedeagal complex, lateral view. (16 – 18) Coenosia ochroprocta (Speiser), male: (16) sternite 5, dorsal view; (17) cercal plate, dorsal view; (18) aedeagal complex, lateral view.