Fannia dupla Nishida, 1974

Zhang, Dong, Li, Wei, Zhang, Ming, Wang, Ming-Fu & Wang, Rong-Rong, 2016, Fanniidae (Insecta, Diptera) from Beijing, China, with key and description of one new species, Zootaxa 4079 (4), pp. 401-414 : 406-408

Fannia dupla Nishida, 1974

( Fig. 4 )

Fannia dupla Nishida, 1974: 205 . Type locality: Japan, Ishikawa, Kanazawa, Mt. Iôzen. Fannia dupla: Pont 1977: 448 ; Pont 1986: 47; Nishida 1994: 82; Xue & Wang 1998: 816; Lin & Chen 1999: 108; Wang & Xue 2002: 56; Su & Wang 2004: 111.

Redescription based on the specimens collected in Beijing, China. MALE. Body length 4.00−5.00 mm. Eye bare; facets slightly enlarged on anterior margin in upper part; fronto-orbital plate and parafacial with grayishsilvery pollinosity; frons slightly narrower than the distance between two posterior ocelli at narrowest point; frontal vitta black, linear at narrowest point; frontal setae twelve to fifteen, long, nearly reaching ocellar triangle; orbital setae absent; postocular setae in one row, short and neatly arranged, without occipital seta behind the postocular setae on vertex; parafacial bare, at middle about 2/5 as wide as the width of postpedicel; antenna brown, postpedicel about 2.00x longer than wide, arista black and short plumose, slightly swollen in basal part, the longest individual hair shorter than aristal base; epistoma about at the same level of vibrissal angle, vibrissal angle behind frontal angle in profile; subvibrissal setae in one row, lateral with three or four fine setae; gena and genal dilation with fine black setae, upper margin of gena without upcurved seta; prementum with thin grayish-yellow pollinosity, its length about 2.00x as long as its width; palpus black, claviform, slightly longer than the length of prementum. Thorax ground-color black, notum with dark brown pollinosity, without distinct vitta; presutural acr triserial, hairlike, only prescutellar pairs long, dc 2+3, ia 0+2, pra 2 (fine but distinct), the anterior one about 1/3 as long as posterior notopleural seta; notopleuron without seta; basisternum, proepisternum, anepimeron, meron and katepimeron bare; katepisternal setae 1+1, katepisternum with some slightly straight setae and without ventral spine; anterior spiracle yellowish, posterior one brown; calypters brownish with dark brown margin, the lower one distinctly projecting beyond the upper one. Wing brown; veins dark brown; tegula black; basicosta dark brown; costal spine inconspicuous; node of Rs bare on ventral and dorsal surfaces; vein M straight, slightly close to vein R4+5 distally; crossveins without obvious cloud; haltere yellowish-brown. Legs black; fore coxa without anterior spine on ventral surface, fore femur with complete pv row, fore tibia without ad and median p, with two median pv; mid coxa without hook-like spine or spine-like seta, mid femur with stout av row in basal part, becoming short and comb-like setae row in distal 1/3, with complete pv row, slightly biserial in median part, mid tibia with one ad, one or two pd, the longest one shorter than mid tibial width in distal part, mid first tarsomere without basal tooth-like spine on ventral surface; hind coxa with one long seta on posterior surface, hind femur with a short av row in basal 2/3, with two stout setae in distal 1/3, without pv row, hind tibia with three to five av, four or five ad and two pd. Abdomen oval and flattened, ground-color black, with dense grayish-brown pollinosity; syntergite 1+2 to tergite 4 each with one broad median inverted triangular vitta, tergite 5 with one narrow median stripe; sternite 1 bare; terminalia see Nishida (1974: 206).

FEMALE. Unknown.

Material examined. CHINA: Beijing: 2♂, Yanqing, Mt. Songshan , 31.V.2009, Coll. D. Zhang ( MBFU).

Distribution. Palearctic: China (Beijing, new record from mainland China), Japan; Oriental: China ( Taiwan).

Figures

FIGURE 4. Fannia dupla Nishida, 1974 from Beijing, China, male: A. Habitus, lateral view. B. Abdomen, dorsal view. C. Head, anterolateral view. D. Head, anterior view. (Scale bars: A = 1.00 mm, B − D = 0.50 mm).