Helina dorsalis ( Stein, 1914 )

Couri, Márcia S. & Pont, Adrian C., 2018, The male terminalia of some African species of Helina Robineau-Desvoidy, 1830 (Diptera, Muscidae), Zootaxa 4399 (2), pp. 233-247 : 234

Helina dorsalis ( Stein, 1914)

( Figs 1–4 )

Examined type material. Holotype lost ( Pont 2013: 70). One male from Kenya (Aberdares, Mt. Kinangop) dissected and illustrated.

Diagnosis. Eye of male densely haired; scutum brownish-grey pollinose, with some orange areas, also on the pleura; dorsocentrals 1+3; lower anterior katepisternal well developed; fore tibia without anterodorsal seta; crossvein dm–cu strongly sigmoid with a dark round spot on each extremity; abdomen blue-grey with no marks; male terminalia large and projecting. A detailed description was given by Malloch (1921: 228).

Male terminalia. Sternite 5 triangular, wider than long, with short setae on disc and lobes; posterior incision deep; lobes robust and widely separated ( Fig. 1 ); cercal plate cordiform with anterior incision deep; surstylus greatly elongated ( Fig. 2 ); surstylus longer than cercal plate and with short setae ( Fig. 3 ); aedeagal complex with epiphallus as long as postgonite; distiphallus membranous ( Fig. 4 ).

Notes. The species was originally described from Kenya in the genus Mydaea Robineau-Desvoidy, 1830 and was placed by Emden (1951) in Helina, subgenus Euspilaria Malloch, 1921 .

Figures

FIGURES 1–4. Helina dorsalis (Stein, 1914), male:(1) sternite 5, dorsal view; (2) cercal plate and surstylus, dorsal view; (3) cercal plate and surstylus, lateral view; (4) aedeagal complex, lateral view. Scale bar 0.1 mm.