Gonia foersteri Meigen, 1938

3.1.8 Gonia foersteri Meigen, 1938 View in CoL ( Figs 41‒48 View Figures 41–48 )

Gonia foersteri Meigen, 1838: 246 View in CoL ; Herting & Dely-Draskovits, 1993: 259; Lee & Han, 2010: 186. Type locality: Germany: Stolberg .

Diagnosis. The species is different from other species by: frontal vitta, fronto-orbital plate, parafacial, gena orange; upper occiput dark reddish yellow; antenna black; palpus reddish yellow; frons of male about 0.63‒0.65 of head width; parafacial with 4‒5 rows black setae, near facial ridge thicken and lengthen gradually; 2 pairs of proclinate outer orbital setae; 4 pairs of orbital setae; facial ridge above vibrissa with 5‒6 setae; antenna with 1st flagellomere about 2.8‒2.9 times as long as pedicel; thorax brown; 3 postpronotal setae, aligned; 4 katepisternal setae; scutellum brown, 1 pair of apical scutellar setae, parallel and upward posterior; proepisternum with tiny black setae; tegula, basicosta reddish yellow; base of vein R 4+5 with 6‒7 setulae; the length between the bend of vein M and wing posterior margin about 2.5 times the length of vein M from crossvein dM-Cu to its bend; legs entirely black, fore claw of male shorter than tarsomere 5, fore tibia with 2‒ 3 posterior setae; mid tibia with 5 anterodorsal setae; hind tibia with 2 anterodorsal setae. Abdomen black, anterior 1/7 of tergite 3, anterior 1/6 of tergite 4, anterior 1/3 of tergite 5 with thin silver pruinosity.

Material examined. China: Liaoning. 2♂, Benxi, Xiadian , 21.IV.1973, W.Q. Xue; 1♀, Wangxi Park, 12.V.1964, W.Q. Xue ( SYNU) .

Distribution. China ( Liaoning), Japan, Korea, Austria, Czech, Slovakia, Germany, Greece, Israel, Italy, Ukraine.

Remarks. The species is reported in China for the first time.