Phortica (Phortica) tibeta Gong & Chen, 2019

Huang, Jia, Gong, Lu, Tsaur, Shun-Chern, Zhu, Lin, An, Keying & Chen, Hongwei, 2019, Revision of the subgenus Phortica (sensu stricto) (Diptera, Drosophilidae) from East Asia, with assessment of species delimitation using DNA barcodes, Zootaxa 4678 (1), pp. 1-75 : 66-67

Phortica (Phortica) tibeta Gong & Chen , sp. nov.

( Fig. 36 )

Diagnosis. This species is somewhat similar to P. rhagolobos Chen & Gao in Cheng et al. 2008 in having the vertical process of gonopod bifurcated distally ( Fig. 36C ), but can be distinguished from the latter by having the vertical process of gonopod narrow, strongly sclerotized, and with several small jagged-like projections ( Fig. 36C ); the basal bridge of aedeagal median rod strongly elongated, slightly shorter than aedeagal median rod, with several minute, jagged-like processes ( Fig. 36C ).

Description. Frons black. Face brown. Mesoscutum, pleura and scutellum brown brownish yellow, with brown to dark brown patches and pollinose pattern. Male terminalia ( Fig. 36 ): Epandrium lacking pubescence anteroventrally, with ca. 11 setae on dorsal to posterolateral portion per side ( Fig. 36A ). Surstylus lacking pubescence on outer surface, with several wedge-like prensisetae on apical margin and inner surface ( Fig. 36B ). Posterolateral lobe of hypandrium undeveloped and lacking pubescence ( Fig. 36C ). Paramere medially pubescent; apical and median processes each with 1 tooth; basal process slightly triangular ( Fig. 36D ).

Measurements and indices. BL = 3.73 mm in holotype (range in 3♂ paratypes: 3.07–3.73), ThL = 1.35 mm (1.33–1.50), WL = 2.73 mm (2.44–2.89), WW = 1.24 mm (1.11–1.30), arb = 5/2 (4–5/2–3), avd = 0.73 (0.63–0.70), adf = 1.80 (1.71–1.86), flw = 1.56 (1.33–2.00), FW/HW = 0.48 (0.40–0.48), ch/o = 0.09 (0.08–0.10), prorb = 0.86 (0.78–1.00), rcorb = 0.44 (0.35–0.56), vb = 0.78 (0.64–0.73), dcl =0.57 (0.48–0.58), presctl = 0.43 (0.51–0.62), sctl = 0.95 (1.10–1.26), sterno = 1.64 (1.67–1.92), orbito = 1.71 (1.25–1.83), dcp = 0.24 (0.24–0.30), sctlp = 0.73 (0.79–1.14), C = 2.74 (2.04–3.17), 4c = 1.42 (1.45–1.75), 4v = 3.05 (2.85–3.13), 5x = 1.00 (0.85–1.04), ac = 2.45 (3.86–4.14), M = 0.68 (0.55–0.75), C3F = 0.63 (0.70–0.72).

Type materials. Holotype ♂ ( SCAU, No. 123275), CHINA: Beibeng, Motuo , Xizang, 29°19'00''N, 95°20'00''E, alt. 1000m, 29.ix.2010, J.J. Gao . Paratypes: CHINA: 3♂ (1♂ in SCAU, No. 123276; 2♂ in TMNS), same data as the holotype, L. Wang, L. Wu, Y.R. Su ; 1♂ ( SCAU, No. 112026), Moli Forest Park, Ruili , Yunnan, 24°07'05''N, 97°58'51''E, alt. 920m, 23.iv.2017, H.W. Chen .

Distribution. China (Yunnan, Xizang).

Etymology. Toponym, according to the locality of the holotype.

Figures

FIGURE 36. Phortica (Phortica) tibeta Gong & Chen, sp. nov., male. A. Epandrium and cercus (lateral view); B. Surstylus (frontal view); C. Hypandrium, aedeagus, gonopod, and aedeagal apodeme (lateral view); D. Paramere (lateral view). Scale bars = 0.1 mm.