Fannia labidocerca Feng & Xue, 2006

Wang, Ming-fu, Li, Wei, Zhu, Wei-bing & Zhang, Dong, 2016, Review of the Fanniapostica-group Chillcott, 1961 of the genus Fannia Robineau-Desvoidy, 1830, with description of two new species from the Palearctic and Oriental regions (Diptera, Fanniidae), ZooKeys 598, pp. 113-128 : 117-118

Taxon classification Animalia Diptera Fanniidae

Fannia labidocerca Feng & Xue, 2006 Fig. 1

Fannia labidocerca Feng & Xue, 2006: 217.

Redescription.

MALE. Body length 4.8 mm. Eye with short and distant hairs or bare; postocular setae in 2 rows, those of the anterior row sparse and long, curved anteriorly, those of the posterior row short; fronto-orbital plate and parafacial with silvery-white pollinosity; frons at narrowest point slightly wider than the distance between outer margins of posterior ocelli; frontal vitta black, at narrowest point about as wide as fronto-orbital plate; frontal setae 12, stout, situated on the lower 4/5 of frons, orbital setae absent; parafacial bare, at middle about 1/3 as wide as the width of postpedicel; antenna black, postpedicel about 2.0 to 2.5x as long as wide, arista ciliated, the longest individual hairs shorter than aristal base; epistoma not projecting beyond vibrissal angle, vibrissal angle behind frontal angle in profile; genal height about 1/14 of eye height; prementum shining, about 3.0x as long as wide; palpus dark brown, claviform, slightly shorter than prementum. Thorax ground-color black, notum with dark brown pollinosity; presutural acr biserial, long, one pair of them slightly stout, only prescutellar pairs stout, dc 2+3, ia 0+2, pra 2, about 2/5 of length of posterior notopleural seta; notopleuron bare; basisternum, proepisternum, anepimeron, meron and katepimeron bare; katepisternal setae 1+1, katepisternum without a ventral spine; spiracles brown; calypters mostly brown or brownish, brownish on the outer margin, the lower one small and tongue-like, about 1/2 as long as the upper one. Wing brownish; veins and wing-base yellow; basicosta brownish-yellow; costal spine inconspicuous; node of Rs bare on ventral and dorsal surfaces; vein M1+2 straight, parallel to vein R4+5 distally; crossveins not clouded; haltere brown in basal part, yellowish at middle and dark brown in distal part. Legs entirely black, sometimes dark brown or brown; fore tibia without p; mid coxa without any hook-like spine or spine-like seta; mid femur concave on ventral surface in apical part, becoming swollen from distal 1/3 towards basal part, with a row of av, stout in basal part, becoming shorter and denser in distal 1/4, with a cluster of spine-like setae in distal 1/3, a complete row of ad, slightly short (Fig. 1A), with a complete row of slender p, slightly situated on the posteroventral surface, with a row of pv in basal 4/5, and with a row of setulae at middle towards distal 1/4; mid tibia slightly swollen towards apex, in distal half with one ad, one preapical d, one pd, and with numerous slender setulae on ventral surface, most of the setulae longer than mid tibial width in distal part (Fig. 1A); mid first tarsomere with a basal tooth-like spine on ventral surface; hind coxa bare on posterior surface; hind femur with 3 stout av in distal 1/3, without pv; hind tibia with one av, one ad and one median d. Abdomen long and flattened (Fig. 1D), ground-color black, with thin gray pollinosity; syntergite 1+2 and tergites 3-5 each with one dark median triangular vitta (Fig. 1D); sternite 1 with 4 long lateral marginal setae; for morphology of sternites 5 and 9 and terminalia, see Fig. 1B, C, E, F.

FEMALE. Unknown.

Remarks.

Feng and Xue (2006) placed Fannia labidocerca into the Fannia serena -subgroup of the Fannia serena -group while recording the species from the Mt. Emei Region, Sichuan, China. However, this species should be placed into the Fannia postica -subgroup by sharing the following morphological characters with all other species of the subgroup: mid first tarsomere with a distinct basal tooth-like spine on ventral surface; lower calypter short, tongue-like (Fig. 1E, F).

Type specimens examined.

Holotype male: China, Sichuan, Emeishan, Mt. Emei, 29.59°N, 103.30°E, 3099 m, 22.VI.1984, Coll. Y. Feng (IESNU). Paratypes: 1 male, China, Sichuan, Yaan, Hanyuan, Mt. Jiaoding, 3550 m, 8.VII.1987, Coll. Y. Feng (IESNU); 1 male, China, Yunnan, Lushui, Pianma, Mt. Gaoligong, 2400 m, 24.VI.2010, Coll. Y.Y. Zhou (IESNU).

Distribution.

Oriental: China (Yunnan); Palearctic: China (Shaanxi, Sichuan).