Phortica uncinata 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 : 3962-3964

Phortica uncinata Chen and Gao , sp. nov.

( Figure 5 )

Diagnosis

Aedeagal median rod with one small, triangular process submedially ( Figure 5C ); branch of aedeagal basal bridge bifurcated apically ( Figure 5C ); vertical process of gonopod with six to seven sawtooth-shaped processes laterally ( Figure 5C ).

Description

Head. Frons dark brown, slightly pale lower, medially with a few minute, interfrontal setulae. Face brown. Gena dark brown. Postgena brown.

Thorax. Notum and pleura orange-yellow, with dark brown patches and a pollinose pattern. Anepisternum lacking setulae. Scutellum orange-yellow, pale at tip, with a Yshaped brownish patch.

Wing. r-m and dm-cu crossveins clouded.

Legs. Yellow; tibiae with three dark grey rings.

Abdomen. First to fifth tergites yellow, second sublaterally and laterally with black patches; third and fifth with medially protruded, broad, brown-black band along posterior margins, sublaterally with one pair of yellow patches; sixth almost entirely black.

Male terminalia. Epandrium pubescent anteroventrally and on posterior margins; 11 setae near posterior margin ( Figure 5A ). Surstylus lacking pubescence, with about ten setae basally, and about seven prensisetae apically. Additional plate between cerci and tenth sternite with pubescence, connected to tenth sternite ( Figure 5B ). Hypandrial posterolateral lobe pubescent ( Figure 5C ). Paramere lacking pubescence, tripartite distally: apical process with one sensillum, lacking teeth; median process slender, with one sensillum apically; proximal process finger-shaped ( Figure 5C ).

Measurements. BL 53.67 mm (5 „ paratypes: 3.34–3.97); ThL 51.50 mm (1.45–1.50); WL 53.20 mm (3.10–3.50); WW 51.22 mm (1.20–1.40).

Indices. arb56/4 (5–6/3–4), avd50.60 (0.60–0.70), adf51.60 (1.60–1.80), flw51.60 (1.60–1.70), FW/HW50.40 (0.40), ch/ o50.05 (0.05–0.06), prorb51.00 (1.00–1.10), rcorb50.50 (0.50–0.60), vb50.50 (0.35–0.50), dcl50.55 (0.55–0.60), presctl50.65 (0.60–0.70), sctl51.20 (1.10–1.20), sterno50.80 (0.75–0.85), orbito51.45 (1.40–1.60), dcp50.25 (0.25), sctlp51.30 (1.20–1.30), C52.57 (2.44–2.68), 4c51.28 (1.17–1.50), 4v52.69 (2.36–3.14), 5x51.11 (0.95–1.11), ac53.70 (3.60–3.90), M50.69 (0.47–0.70), C3F50.75 (0.64–0.78).

Holotype: „, Yunnan: Xishuangbanna, Menglun , 940 m alt., 13 September 2002, H.-W. Chen ( SCAU) . Paratypes: Yunnan: Simao, Yixiang , 1400 m alt., 6 „ (3 „, ex tree trunks) same data as the holotype ( SCAU); 7 „, 5 December 2000, J.-J. Gao ( KIZ). Xishuangbanna, Menglun, 940 m alt., 5 „, 22–23 September 2003, 5 „, 24–26 December 2003, S.-Y. Wen and H.-W. Chen (6 „, SCAU; 4 „, SEHU) .

Remarks

This species resembles P. pi ( Toda and Peng, 1990) from Guangdong, China in having the branch of the aedeagal basal bridge hook-shaped, strongly sclerotized. It can be distinguished from P. pi by having the vertical process of gonopod with six to seven pairs of sawtooth-shaped processes (P. pi has only two pairs of horn-shaped processes and the branch of aedeagal basal bridge not bifurcated apically).

Figures

Figure 5. Phortica uncinata 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.