Helina nemoralis ( Stein, 1913 )

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 : 240

Helina nemoralis ( Stein, 1913)

( Figs 35–38 )

Examined type material: Syntypes destroyed ( Pont 2013: 90). One male from Kenya (Mt. Kinangop) dissected and illustrated.

Diagnosis. Palpus dark brown; scutum dark brown-grey pollinose; dorsocentrals 1+4; crossvein dm–cu uniformly and sometimes very slightly infuscated; abdominal tergites each with one pair of round dark marks, syntergite 1+2 and tergites 3–4 also with a median brown stripe.

Male terminalia. Sternite 5 longer than wide, with posterior membrane deep, with short setae on disc and lobes ( Fig. 35 ); cercal plate and surstylus short ( Fig. 36 ); surstylus shorter than cercal plate in lateral view ( Fig. 37 ); aedeagal complex with phallapodeme short, and epiphallus long and curved, longer than postgonite ( Fig. 38 ).

Notes. This species was originally described from South Africa in the genus Mydaea Robineau-Desvoidy, 1830 and was placed in Helina, subgenus Euspilaria Malloch, 1921 , by Emden (1951). It is easily recognized in Emden’s key to Euspilaria (1951: 614) by having four postsutural dorsocentrals.

Figures

FIGURES 35–41. Helina nemoralis (Stein, 1913), male: (35) sternite 5, dorsal view; (36) cercal plate and surstylus, dorsal view; (37) cercal plate and surstylus, lateral view; (38) aedeagal complex, lateral view. Helina novarae (Schiner, 1868), male: (39) sternite 5, dorsal view; (40) cercal plate and surstylus, dorsal view; (41) cercal plate, surstylus and aedeagal complex, lateral view. Scale bar 0.1 mm.