Fannia ardua Nishida, 1976

Wang, Ming-fu, Li, Kai & Zhang, Dong, 2011, Taxonomic review of the postica-group of Fannia Robineau-Desvoidy (Diptera, Fanniidae) from China, with the description of one new species, ZooKeys 112, pp. 1-19 : 8-9

Fannia ardua Nishida, 1976 Figs 13-15

Fannia ardua Nishida 1976: 135-137; Wang and Xue 2002: 55; Su and Wang 2004: 110; Wang et al. 2006: 555.

Description.

MALE. Body length 4.0 mm. Eye bare, facets slightly enlarged on anterior margin in upper part; fronto-orbital plate with greyish-brown pruinosity in upper half, lower half of fronto-orbital plate and parafacial with silvery-grey pruinosity; the median part of frons about as wide as anterior ocellus, frontal vitta linear at middle, frontal setae 7 or 8, situated in the lower 2/3 of frons, orbital setae absent; postocular setulae in one row, regularly placed; parafacial bare, about 1/3 as wide as postpedicel width at middle; antenna black, postpedicel about 1.2 times as long as wide, arista black, distinctly swollen in basal 1/5, ciliated, the longest hairs about as long as aristal base; epistoma not projecting beyond vibrissal angle, vibrissal angle behind frontal angle in profile; gena and genal dilation with black hairs; genal height about 1/10 of eye height, upper margin of gena without upcurved setae; prementum shining, with thin grey pruinosity, its length 2.0 times as long as its width, palpus black, claviform, slightly longer than prementum. Thorax ground-colour black, with thin greyish-brown pruinosity, scutum without distinct stripe; presutural acr biserial, only prescutellar pairs slightly stout, the distance between two acr rows slightly narrower than the distance between acr row and dc row, dc 2+3, ia 0+2, pra 2, the anterior one about 1/2 as long as posterior notopleural seta, notopleuron without setulae; basisternum, proepisternum, anepimeron, meron and katepimeron bare; katepisternal setae 1:1, katepisternum without ventral spines; spiracles brown; calypters brown, lower one slightly projecting beyond upper one. Wing brownish; veins brown, tegula black, basicosta brown, costal spine inconspicuous; vein Sc curved bow-like; node of Rs bare on ventral and dorsal surfaces; vein R4+5 straight, veins R4+5 and M conspicuously close to each other distally; crossveins without obvious cloud; haltere yellowish-brown. Legs entirely black; fore tibia without ad and median p; mid coxa without any hooked spines or spine-like setae on lower and outer margins, mid femur narrowed and bare in subapical part, with 6 or 7 sparse and long av in basal 2/5, becoming gradually shorter and denser towards apex, pv row complete, biserial at middle, p row stout, mid tibia distinctly swollen in distal part, with 1 ad and 1 pd in distal half, with numerous hairs on ventral surface, the longest ones shorter than mid tibia width, mid first tarsomere with 1 tooth-like basal process on ventral surface; hind coxa bare on posterior surface, hind femur with 1 subapical av, 1 apical d, 1 apical pd, 3 ad in distal 1/3 and 5 pv in distal half, hind tibia with 1 av, 1 ad, 1 median d and 1 apical d. Abdomen long, depressed and flattened, ground-colour black, with densely greyish-brown pollinosity; syntergite 1+2 to tergite 4 each with dark triangular mark at middle, tergite 5 only with a dark stripe at middle; sternite 1 with 4 or 5 long setae on each lateral margin.

Material examined.

China: Jilin: 1 ♂, Mt. Changbai, 42°19 ’48” N, 127°16 ’12” E, 10.VII.1998.

Distribution.

China (Jilin), Japan.