Phortica (Ashima) libo, 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 : 73-75

Phortica (Ashima) libo sp. nov.

Figure (1)

Diagnosis

This species is simi l ar to P. yiqini sp. nov. in the body pattern, but can be distinguished by the sma ll apex of ma l e arista and presence of most l y 2 dorsa l branches ( Figure 1 (a)); vertica l process of gonopods submedia ll y with 1 rod- l ike process on l eft side ( Figure 1 (d), pr l), and 1 near l y triangu l ar process on right side ( Figure 1 (d, e), pr r); see that under that species. The 5.8% interspecific genetic distance to P. yiqini is one of the sma ll est interspecific distances ascertained within this subgenus.

Description

Frons l arge l y ye ll owish brown, with brownish b l ack band above l unu l e, and 2 l ong- itudina l rows of thick interfronta l setae. Ma l e arista with 2 (most l y) – 3 (on l y in one specimen) dorsa l branches ( Figure 1 (a)). Face dark brown, with ye ll owish-white patches on l ower corners. C l ypeus media ll y white, l atera ll y b l ack. Thorax orange-ye ll ow, anteromedia ll y with brown 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; tergites third to fifth ye ll owish, with broad brownish-b l ack posterior bands interrupted media ll y; sixth tergite entire l y b l ack. Ma l e termina l ia: Sursty l us with severa l setae and pubescence on dista l margin of inner surface, l acking prensisetae ( Figure 1 (c)). Paramere apica ll y knobbed and smooth, submedia ll y s l ight l y curved, basa ll y with 1 sensi ll um ( Figure 1 (d, e)). Gonopods asymmetrica ll y sc l erotized the sc l erotized part bifid apica ll y in ventra l view ( Figure 1 (d)). Aedeagus membraniform ( Figure 1 (e)).

Measurements

BL = 4.50 mm in ho l otype (range in 3 ma l e paratypes: 4.10 – 4.50 mm), THL = 2.00 mm (1.70 – 2.00 mm), WL = 3.70 mm (3.25 – 3.60 mm), WW = 1.55 mm (1.25 – 1.50 mm), arb = 2/0 (2 – 3/0), adf = 0.67 (0.63 – 0.71), flw = 1.44 (1.43 – 1.50), FW/HW = 0.46 (0.39 – 0.41), ch/o = 0.10 (0.08 – 0.11), prorb = 1.50 (1.38 – 1.67), rcorb = 0.43 (0.40 – 0.56), vb = 0.45 (0.43 – 0.67), dc l = 0.55 (0.42 – 0.55), presct l = 0.50 (0.46 – 0.54), sct l = 1.17 (1.17 – 1.35), sterno = 0.80 (0.80 – 0.83), orbito = 1.83 (1.80 – 2.00), dcp = 0.33 (0.27 – 0.30), sct l p = 1.20 (1.25 – 1.30), C = 2.15 (1.79 – 2.10), 4c = 1.70 (1.60 – 1.90), 4v = 3.25 (2.85 – 3.25), 5x = 1.07 (1.14 – 1.25), ac = 3.40 (3.18 – 3.62), M = 0.80 (0.75 – 0,80), C3 F = 0.59 (0.53 – 0.66).

Type specimens

Holotype male ( SCAU, No. 124437 ), China: Libo , Maolan, Guizhou , 25.283°N, 107.900°E, altitude 850 m, 20 July 2015, YQ Liu. Paratypes: 1 ma l e (SCAU, No. 124438), same l oca l ity data as ho l otype; 2 ma l es (SCAU, Nos. 124439, 40), 21 September 2015, J Huang, YQ Liu, YL Wang, Y Zhang, l oca l ity as for ho l otype.

Etymology

Toponym, according to the l oca l ity of type specimens.

Figures

Figure 1. Phortica (Ashima) libo sp. nov. ι male. (a) arista; (b) epandrium (epand) ι cercus (cerc) and surstylus (sur) (lateral view); (c) surstylus (inner view); (d) hypandrium (hypd) ι parameres (pm) and gonopods (gon) (ventral view); (e) hypandriumι gonopodsι paramereι aedeagus (ade) and aedeagal apodeme (aed a) (lateral view). Scale bars = 0.1 mm.