Phortica (Phortica) allomega 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 : 60-61

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

( Fig. 31 )

Diagnosis. This species is somewhat similar to P. hainanensis ( Chen & Toda, 1998) in the male terminalia ( Fig. 31 ), but can be distinguished from the latter by having the anterior branch of paramere apically broadened and strongly sclerotized, with 1 small cleft ( Fig. 31C ); aedeagus submedially lacking process on median rod, and basolaterally lacking brown patch on outer membrane ( Fig. 31C ).

Description. Frons brown above, dark brown below. Face black. Mesoscutum yellow, black anteromedially. Pleura greyish yellow, brownish on katepisternum. Male terminalia ( Fig. 31 ): Epandrium pubescent and strongly protruded on anteroventral corners, with ca. 8 setae on dorsal to posterolateral portion per side ( Fig. 31A ). Surstylus medially strongly curved inward, lacking pubescence on outer surface, with several prensisetae on distal 1/3 ( Fig. 31B ). Posterolateral lobe of hypandrium undeveloped and lacking pubescence ( Fig. 31C ). Paramere lacking sensillum or tooth on anterior and posterior branches ( Fig. 31C ).

Measurements and indices. BL = 3.91 mm in holotype (range in 2♂ paratypes: 3.47–3.64), ThL = 2.00 mm (1.78–1.87), WL = 3.20 mm (3.02–3.08), WW = 1.33 mm (1.33–1.42), arb = 4/2 (5–6/2–3), adv = 0.73 (0.73–0.80), adf = 2.00 (1.88–2.00), flw = 1.88 (1.87–1.88), FW/HW = 0.48 (0.48–0.50), ch/o = 0.17 (0.15–0.17), prorb = 0.91 (0.76–0.91), rcorb = 0.49 (0.48–0.52), vb = 0.56 (0.50–0.58), dcl = 0.50 (0.50–0.58), presctl = 0.55 (0.56–0.65), sctl = 1.09 (1.03–1.08), sterno = 0.79 (0.76–0.77), orbito = 1.40 (1.38–1.43), dcp = 0.23 (0.20–0.24), sctlp = 1.03 (1.00–1.03), C = 2.04 (1.76–1.88), 4c = 1.79 (1.73–1.81), 4v = 3.30 (3.00–3.06), 5x = 1.20 (1.18–1.26), ac = 2.78 (2.76–3.06), M = 0.86 (0.80–0.81), C3F = 0.66 (0.68–0.71).

Type materials. Holotype ♂ ( SCAU, No. 124906), CHINA: Mengdong, Cangyuan , Yunnan, 23°10'08''N, 99°13'52''E, alt. 1320m, 7.v.2016, J. Huang . Paratypes: 2♂ ( SCAU, Nos. 124907, 08), J. Huang, L. Zhu, other data same as the holotype .

Distribution. China (Yunnan).

Etymology. A combination of the Greek words: ' all ' + ' omega ', referring to this species is different from P. omega ( Okada, 1977) .

Figures

FIGURE 31. Phortica (Phortica) allomega Gong & Chen, sp. nov., male. A. Epandrium and cercus (lateral view); B. Surstylus (frontal view); C. Hypandrium, paramere, aedeagus, gonopod, and aedeagal apodeme (lateral view). Scale bars = 0.1 mm.