Phortica ( Phortica ) xianfui 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 : 68-69

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

( Fig. 37 )

Diagnosis. This species is very similar to P. subradiata ( Okada, 1977) in the shape of paramere, but can be distinguished from the latter by having the vertical process of gonopod radiated apically ( Fig. 37C ); two basal bridges of aedeagal median rod fused to each other ( Fig. 37C ).

Description. Frons dark brown. Face brownish. Mesoscutum and pleura brownish yellow, with brown spots and pollinose pattern. Scutellum brownish yellow, with 1 pair of dark brown patches distolaterally. Male terminalia ( Fig. 37 ): Epandrium pubescent anteroventrally, with ca. 14 setae on dorsal to posterolateral portion per side ( Fig. 37A ). Surstylus basally pubescent on outer surface, with ca. 6 wedge-like prensisetae on apical margin ( Fig. 37B ). Posterolateral lobe of hypandrium undeveloped and lacking pubescence ( Fig. 37C ). Paramere expanded and pubescent distally; apical and medial processes each with 1 tooth and 1 sensillum; basal process round apically ( Fig. 37D ). Vertical process of gonopod apically with 4 or 5 of projections per side ( Fig. 37C ). Aedeagal median rod submedially with 1 pair of small processes (pr in Fig. 37C ) and 1 small projection (ps).

Measurements and indices. BL = 3.33 mm in holotype (range in 4♂ paratypes: 3.00–3.50), ThL = 1.69 mm (1.24–1.64), WL = 2.49 mm (2.31–2.71), WW = 1.24 mm (1.20–1.24), arb = 4/2 (4–5/2–3), avd = 0.73 (0.64–0.88), adf = 2.57 (1.80–2.60), flw = 2.14 (1.91–2.13), FW/HW = 0.43 (0.42–0.49), ch/o = 0.08 (0.08–0.09), prorb = 1.00 (0.81–1.22), rcorb = 0.44 (0.44–0.53), vb = 0.64 (0.50–0.73), dcl = 0.57 (0.47–0.68), presctl = 0.57 (0.44–0.71), sctl = 1.09 (1.05–1.11), sterno = 1.50 (1.10–1.50), orbito = 1.33 (1.33–1.80), dcp = 0.28 (0.23–0.30), sctlp = 1.13 (1.07–1.25), C = 2.19 (2.11–2.59), 4c = 1.59 (1.38–1.69), 4v = 2.82 (2.80–3.36), 5x = 1.09 (0.83–1.30), ac = 3.86 (2.26–4.17), M = 0.71 (0.63–0.93), C3F = 0.70 (0.63–0.78).

Type materials. Holotype ♂ ( SCAU, No. 123279), CHINA: Beibeng, Motuo , Xizang, 29°19'00''N, 95°20'00''E, alt. 1000m, 3.x.2010, J.J. Gao . Paratypes: CHINA: 8♂ ( 4♂ in SCAU, Nos. 123280–83, 4♂ in TMNS), Y.R. Su, L. Wang, L. Wu, same data as the holotype .

Distribution. China ( Xizang).

Etymology. Patronym, in honour of Dr. X.F. Li (SCAU) for helping us in the fieldwork.

Figures

FIGURE 37. Phortica (Phortica) xianfui 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.