Fannia discoculea Xue in Xue & Wang, 1998

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 : 2-3

Fannia discoculea Xue in Xue & Wang, 1998 Figs 1-3

Fannia discoculea Xue in Xue and Wang 1998: 822-824; Wang and Xue 2002: 56; Su and Wang 2004: 111.

Description.

MALE.Body length 3.5 mm. Eye bare; fronto-orbital plate and parafacial with greyish-white pruinosity; the median part of frons about 1.5 times as wide as anterior ocellus, fronto-orbital plate adjoined in upper half, frontal setae 5, situated in the lower 2/3 of frons, orbital setae absent; parafacial bare and narrow, about half as wide as postpedicel width at middle part; antenna black, postpedicel 1.5 times as long as wide, arista black, distinctly swollen in basal 1/4, haired, the longest hair about equal to aristal base; epistoma not projecting beyond vibrissal angle, vibrissal angle behind frontal angle in profile; gena and genal dilation with black hairs, upper margin of gena without upcurved setae; proboscis short, prementum slightly shining, with greyish-brown pruinosity, palpus black, slightly longer than prementum. Thorax ground-colour black, with thin greyish-brown pruinosity, scutum without stripes; presutural acr biserial, only prescutellar pairs slightly stout, dc 2+3, ia 0+2, pra 1, notopleuron without setulae; basisternum, proepisternum, anepimeron, meron and katepimeron bare; katepisternal setae 1:1, katepisternum without ventral spines; calypters yellowish, lower one slightly projecting beyond upper one. Wing brownish; costal spine inconspicuous; vein Sc curved bow-like; node of Rs bare on ventral and dorsal surfaces; crossveins without obvious cloud; haltere yellow. 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 with 15 av, becoming gradually shorter towards apex, pv row distinct in basal 2/3, p row stout in distal part, mid tibia slightly swollen in distal part, with 1 ad, 1 pd and numerous hairs on ventral surface, the longest one about equal to mid tibia width, mid first tarsomere without basal tooth-like spines on ventral surface, only with a cluster of hairs; hind coxa with hairs on posterior surface, hind femur with 5 av and 2 ad in distal half, 2 long pv in distal 1/4, the longer one slightly longer than hind femoral width, hind tibia with 1 av, 1 ad and 1 d. Abdomen oval, depressed and flattened, ground-colour black, with thin greyish-brown pollinosity; syntergite 1+2 to tergite 4 each with a black triangular mark at middle; sternite 1 with hairs, sternite 5 broad; cercal plate straight in apex, bare on ventral surface, median part distinctly broad; bacilloform process U-shaped in ventral view, ring-like in lateral view.

Material examined.

Holotype ♂: China: Xinjiang: Jakesi, 43°49 ’12” N, 81°07 ’12” E, 6.VIII.1957, Coll. G. Wang.

Distribution.

China (Xinjiang).