Phortica (Ashima) yalianae, Lin Zhu, Ting Qin & Hongwei Chen, 2017

Lin Zhu, Ting Qin & Hongwei Chen, 2017, Three new species of the subgenus Ashima (Diptera: Drosophildae: Phortica) from southwestern China, with DNA barcoding information, Journal of Natural History 51 (1), pp. 70-82 : 75-76

Phortica (Ashima) yalianae sp. nov.

( Figure 2 )

Diagnosis

Simi l ar to P. foliiseta Duda 1923 in the ma l e termina l ia, but can be distinguished from the l atter species by the ma l e arista cur l y dista ll y ( Figure 2 (a)); the l eft l atera l l obe of vertica l process of gonopods distinct l y l onger than the right in ventra l view ( Figure 2 (d)). In P. foliiseta : two l atera l l obes of vertica l process of gonopods near l y in equa l size ( Tsacas and Okada 1983, fig. 4). The 4.2% interspecific genetic distance to P. foliiseta is the minima l interspecific distance within this subgenus.

Description

Frons dark brown, with thick, dense interfronta l setae. Face brown above, dark brown be l ow, with ye ll owish-white patches on l ower corners. C l ypeus media ll y white, l atera ll y dark brown. Thorax orange-ye ll ow, media ll y with b l ack pattern on marmoration. Scute ll um orange-ye ll ow, with obscure brownish pattern. Legs entire l y ye ll ow; fifth tarsomere of fore l eg with l ong seta apica ll y. Abdomina l second tergite ye ll owish-white, with brownish spots sub l atera ll y; third to fifth tergites ye ll owish, with broad brownish-b l ack posterior bands uninterrupted media ll y; sixth tergite entire l y b l ack. Ma l e termina l ia: Epandrium l atera ll y broad, near l y entire l y pubescent, with dense setae ( Figure 2 (b)). Sursty l us with pubescence and about 20 setae, l acking prensisetae ( Figure 2 (c)). Paramere with 2 – 3 sensi ll a basa ll y ( Figure 2 (d, e)). Aedeagus membranous, l acking median rod ( Figure 2 (e)).

Measurements

BL = 4.20 mm in ho l otype (range in 4 ma l e paratypes: 4.05 – 5.00 mm), THL = 1.95 mm (1.90 – 2.20 mm), WL = 3.50 mm (3.35 – 3.75 mm), WW = 1.50 mm (1.50 – 1.70 mm), arb = 1/ 0 (1 – 2/0), adf = 0.56 (0.56 – 0.76), flw = 1.25 (1.22 – 1.33), FW/HW = 0.40 (0.37 – 0.38), ch/ o = 0.11 (0.08 – 0.13), prorb = 1.14 (1.20 – 1.42), rcorb = 0.43 (0.38 – 0.50), vb = 0.56 (0.52 – 0.63), dc l = 0.50 (0.48 – 0.54), presct l = 0.55 (0.45 – 0.57), sct l = 1.16 (1.03 – 1.17), sterno = 0.83 (0.72 – 0.83), orbito = 2.00 (1.82 – 2.00), dcp = 0.31 (0.27 – 0.33), sct l p = 1.05 (1.00 – 1.17), C = 2.00 (1.85 – 2.18), 4c = 1.75 (1.62 – 1.94), 4v = 3.05 (2.83 – 3.33), 5x = 1.07 (1.00 – 1.14), ac = 3.18 (3.09 – 3.64), M = 0.75 (0.67 – 0,83), C3 F = 0.64 (0.57 – 0.71).

Type specimens

Holotype male ( SCAU, No. 124441 ), China: Mulun, Huanjiang, Guangxi , 25.117°N ′ N, 108.033° E, altitude 500 m, 25 July 2015, YL Wang. Paratypes: 2 ma l es (SCAU, Nos. 124442, 43), YQ Liu, Lin Zhu, same l oca l ity data as ho l otype; 2 males (SCAU, Nos. 124444, 45), 17 September 2015, J Huang, YQ Liu, YL Wang, Y Zhang, l oca l ity as for ho l otype.

Etymology

Patronym of the co ll ector, Ms. Ya l ian Wang (SCAU).

Figures

Figure 2. Phortica (Ashima) yalianae sp. nov. ι male. (a) arista; (b) epandriumι cercus and surstylus (lateral view); (c) surstylus (inner view); (d) hypandriumι parameres and gonopods (ventral view); (e) hypandriumι gonopodsι paramereι aedeagus and aedeagal apodeme (lateral view). Scale bars = 0.1 mm.