Ophiomyia nasuta (Melander, 1913) (fig. 32–37)

M a t e r i a l e x a m i n e d. Near Kamenka, 16.05.2010, 16.05.2010, 1 ♂; near Petrivske, 21.05.2011, 1 ♀ ; Pyatichatki, 13.05.2011, 10.06.2010, 10.07.2010, 5 ♂, 4 ♀ ; Sokolniki, 10.07.2011, 2 ♂, 1 ♀ ; Kharkiv, Botanical Garden, 12.05.2012, 02.09.2012, 2 ♀ ; near Haydary, 03.06.2011, 03.06.2011, 3 ♂, 7 ♀ ; Velyka Pysarivka, 24.06.2012, 1 ♂; near Kuzemin, 23.05.2010, 29.05.2011, 14.08.2011, 16 ♂, 8 ♀ ; Poltava, 12.08.2012, 1 ♀ .

Рис. 32–37. O. nasuta (Melander): 32, 33 — голова самца; 34 — фаллюс, латеральный вид; 35 — то же, вентральный вид; 36 — левая лопасть восьмого стернита; 37 — сперматека. Масштабная линейка 0,1 мм.

R e d e s c r i p t i o n. Head (fig. 32, 33). Orbit slightly projected above eye in profile, wide and shining, with clear contours (anterior view); 2 fr s in male, 2 orb s and 2 fr s in female; frorb sta numerous, proclinate, in several rows, elongate; facial bulb 1.5× as wide as pedicel; spherical; lunule rounded, with wide furrow; frons matt; vibrissa present; ocellar triangle reaching the level of 2nd fr s; maximal height of eye 8.0 × maximal height of gena; 1st flagellomere rounded, with sparse brown pubescence (lateral view).

Wing. Costa to M; last section of M 0.75× as long as penultimate; calypter beige; margin and fringe brown. Length of wing 2.3 mm.

Mesonotum greyish-black with slight greenish shine (anterior view); 3 dc; ac 3 nearest to sctsctl sut and 8 at level of 2nd dc; halter and legs black.

Male genitalia (fig. 34, 35). Phallus 0.32 mm long. Distiphallus oval, with flattened distal margin (ventral view). Distiphallus 1.1 × as long as basiphallus. “Elongate arms of basiphallus well-developed but left arm bends laterally at right angles to aedeagus” (Spencer, 1964).

Female terminalia (fig. 36, 37). Both spermathecae equal, spherical, with cylindrical collar. Proximal and ventral margins of egg guide with sharp, sparse, well-defined teeth. Medial margin without any scales.

D i s t r i b u t i o n. Holarctic (Spencer, 1990), Ukraine (Guglya (2012).

H o s t p l a n t. Asteraceae: Taraxacum spp. (Spencer, 1990) .

B i o n o m i c s. Larva feeds in midrib and stalks (Spencder, 1990).