Phortica setitabula Chen and Gao, 2005

Chen, Hong-Wei, Gao, Jian-Jun & Wen, Shuo-Yang, 2005, Species diversity of the genus Phortica Schiner in Yunnan, China, with descriptions of nine new species (Diptera, Drosophildae), Journal of Natural History 39 (46), pp. 3951-3978 : 3970-3971

Phortica setitabula Chen and Gao , sp. nov.

( Figure 8 )

Diagnosis

Additional plate between cerci very large, more than tenth sternite ( Figure 8B ); paramere subapically with acute process ( Figure 8C ); branch of aedeagal basal bridge with two slender processes basally and two small, triangular projections laterally ( Figure 8C ).

Some characters commonly seen in P. uncinata sp. nov. are not referred to in the following description.

Description

Head. Frons nearly entirely dark brown. Arista basally with dorsal branches. Face entirely orange-brown. Gena black. Postgena brown.

Thorax. Anepisternum with a few setulae. Scutellum pale yellow, with a grey patch.

Legs. Mid tibia subapically with two to three longer setae on anterior surface.

Abdomen. Third and fifth tergites with broad, brown-black bands along posterior margins, sublaterally with one pair of yellow patches.

Male terminalia. Epandrium lacking pubescence anteroventrally, with ten setae near the dorsal to posterior margins ( Figure 8A ). Surstylus with dense, long setae, and pubescence, and about 18–20 apically rounded prensisetae ( Figure 8A ). Paramere lacking pubescence, with one sensillum and two pointed teeth apically ( Figure 8C ). Aedeagal median rod symmetrically expanded subapically ( Figure 8C ).

Measurements. BL 54.20 mm (3 „ paratypes: 3.34–4.40); ThL 51.75 mm (1.40–2.10); WL 53.80 mm (3.27–4.10); WW 51.50 mm (1.33–1.80).

Indices. arb55/0, adf51.60 (1.40–1.60), flw51.60 (1.50–1.60), FW/HW50.40 (0.40), ch/ o50.07 (0.07–0.08), prorb51.20 (1.00–1.20), rcorb50.45 (0.40–0.50), vb50.35 (0.35– 0.50), dcl50.50 (0.50–0.55), presctl50.75 (0.65–0.80), sctl51.10 (1.00–1.10), sterno50.95 (0.90–0.95), orbito51.60 (1.30–1.60), dcp50.25 (0.25–0.30), sctlp51.10 (1.10), C52.40 (2.50–2.81), 4c51.59 (1.30–1.60), 4v53.14 (2.86–3.70), 5x51.00 (0.71– 0.80), ac53.50 (2.60–3.00), M50.68 (0.60–0.70), C3F50.76 (0.69–0.71).

Holotype: „, China: Yixiang, Simao , Yunnan, 1400 m alt., 5 December 2000, J.-J. Gao ( KIZ). Paratypes: 3 „, same data as the holotype ( KIZ, SCAU, and SEHU).

Remarks

This species is similar to P. bipartita ( Toda and Peng, 1992) in the anepisternum with setulae and the aedeagal median rod much expanded apically. In P. bipartita the arista has three ventral branches, and the paramere is strongly sclerotized and deeply bifurcated: the primary one with two sharp projections apically and three to four sensilla subapically; secondary one slender.

Figures

Figure 8. Phortica setitabula Chen and Gao, sp. nov., „. (A) Epandrium, cercus and surstylus (lateral view); (B) 10th sternite and additional plate (frontal view); (C) hypandrium, gonopod, parameres and aedeagal median rod (lateral view). Scale bars: 0.1 mm.