Helina hirtipes metatarsalis Emden, 1951

(Figs 17–19)

Examined type material: Holotype male seen; left hind leg missing; wings with the apical third damaged. One paratype from Kenya (Ngare Narok, Masai Reserve) dissected and illustrated.

Diagnosis. Male dichoptic; dorsocentrals 1+3; katepisternals equidistant one from each other; fore tibia with setulose hairs, denser and longer in male; male mid tibia reddish towards middle; hind femur reddish-orange on basal two-thirds to four-fifths; hind tibia broad, concave on ventral margin and with one anteroventral seta.

Male terminalia. Very peculiar. Sternite 5 broad at base, with posterior membrane deep and lobes straight and very elongated; with few setae on disc and short hairs at tips of lobes, which are yellow (Fig. 17); cercal plate and surstylus very elongated (Fig. 18); surstylus longer than cercal plate and with an elongated process on inner margin in apical fourth (Fig. 19); aedeagal complex with distiphallus short, postgonite with short setae (Fig. 19).

Notes. H. hirtipes (Macquart, 1846) is the type species of Idiopygus Malloch, 1921, now a junior synonym of Helina. H. hirtipes metatarsalis was described as a subspecies. H. hirtipes hirtipes could not be dissected as no material was available in the BMNH collection.