Phortica (Phortica) imbacilia 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 : 64

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

( Fig. 34 )

Diagnosis. This species is somewhat similar to P. eugamma ( Toda & Peng, 1990) and P. gamma ( Toda & Peng, 1990) in having the male abdominal sixth tergite not extended on posterolateral corners and aedeagal outer membrane with minute, transparent spinules, but can be distinguished from the above-mentioned two species by having the aedeagal median rod distally with 1 spine-like process and 1 deeply bifurcated process per side, basally without didymous, rod-like processes ( Fig. 34C ); paramere curved basally ( Fig. 34D ).

Description. Frons dark brown to black above, brown below. Face brown. Mesoscutum, pleura and scutellum brown, with dark brown to black patches and pollinose patterns. Male terminalia ( Fig. 34 ): Epandrium pubescent anteroventrally, with ca. 7 setae on dorsal to posterolateral portion per side ( Fig. 34A ). Surstylus lacking pubescence on outer surface, with several wedge-like prensisetae on apical margin ( Fig. 34B ). Posterolateral lobe of hypandrium undeveloped and lacking pubescence ( Fig. 34C ). Paramere with 1 sensillum and 3 teeth on apical process; medial and basal process slender and glabrous ( Fig. 34D ).

Measurements and indices. BL = 3.33 mm in holotype (range in 6♂ paratypes: 3.07–3.56), ThL = 1.67 mm (1.47–1.67), WL = 2.71 mm (2.47–2.76), WW = 1.20 mm (1.09–1.42), arb = 5/2 (4–5/1–2), adv = 0.77 (0.54–0.77), adf = 1.73 (1.85–2.14), flw = 1.73 (2.00–2.14), FW/HW = 0.47 (0.47–0.51), ch/o = 0.14 (0.14–0.18), prorb = 0.81 (0.75–0.89), rcorb = 0.52 (0.47–0.56), vb = 0.53 (0.48–0.57), dcl = 0.53 (0.44–0.63), presctl = 0.65 (0.51–0.70), sctl = 1.09 (1.07–1.11), sterno = 0.79 (0.77–0.85), orbito = 1.50 (1.33–1.67), dcp = 0.25 (0.24–0.29), sctlp = 1.00 (0.88–1.14), C = 2.00 (1.86–1.96), 4c = 1.57 (1.47–1.64), 4v = 2.86 (2.47–2.93), 5x = 1.06 (1.06–1.13), ac = 2.49 (3.54–3.67), M = 0.64 (0.60–0.67), C3F = 0.75 (0.73–0.78).

Type materials. Holotype ♂ ( SCAU, No. 124901), CHINA: Mengdong, Cangyuan , Yunnan, 23°10'08''N, 99°13'52''E, alt. 1300m, 6.v.2016, L. Zhu . Paratypes: CHINA: 6♂ (2♂ in KIZ, Nos. 0090533, 34; 4♂ in SCAU, Nos. 124902–05), J. Huang, Y.Q. Liu, Y.L. Wang, other data same as the holotype .

Distribution. China (Yunnan).

Etymology. From the Latin words: ' im ' + ' bacillus ', referring to the aedeagal median rod basally without didymous, rod-like process.

Figures

FIGURE 34. Phortica (Phortica) imbacilia Gong & Chen, sp. nov., male.A. Epandrium, surstylus, 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.