Phortica unipetala Chen and Wen, 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 : 3971-3973

Phortica unipetala Chen and Wen , sp. nov.

( Figure 9 )

Diagnosis

Paramere submedially with small, triangular process, and secondary process slender with one tooth apically ( Figure 9C ); branch of aedeagal basal bridge large, single, strongly sclerotized ( Figure 9C ).

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

Description

Head. Frons, face, gena, and postgena brown.

Thorax. Anepisternum with a few setulae.

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

Abdomen. Abdominal third and fifth tergites with medially interrupted, broad, brown-black bands along the posterior margin, sublaterally with one pair of yellow patches.

Male terminalia. Epandrium pubescent near posterior margin, with nine setae near dorsal to posterior margins ( Figure 9A ). Surstylus with about six long setae on basal twothirds, pubescence on distal half part, and about ten prensisetae along apical margin ( Figure 9A ). Paramere lacking pubescence, primary process with one sensillum and two small teeth ( Figure 9C ). Aedeagal median rod expanded subapically, asymmetrical ( Figure 9C ).

Measurements. BL 53.80 mm (1 „ paratype: 3.74); ThL 51.50 mm (1.50); WL 53.40 mm (3.50); WW 51.26 mm (1.30).

Indices. arb56/3 (6/3), avd50.80 (0.75), adf51.60 (1.70), flw51.20 (1.30), FW/ HW50.40 (0.40), ch/ o50.06 (0.06), prorb51.00, rcorb50.35 (0.40), vb50.40 (0.35), dcl50.55 (0.55), presctl50.70 (0.80), sctl51.20 (1.10), sterno50.75 (0.70), orbito51.80

(1.70), dcp50.30 (0.30), sctlp51.30 (1.20), C52.25 (2.50), 4c51.43 (1.10), 4v52.92 (2.83), 5x51.00 (1.29), ac53.33 (3.30), M50.57 (0.77), C3F50.68 (0.71).

Holotype: „, Yunnan: Menglun, Xishuangbanna , 940 m alt., 23 September 2003, H.-W. Chen ( SCAU). Paratype: 1 „, same data as the holotype ( SCAU).

Remarks

This species is similar to P. bipartita in having the anepisternum with setulae and the arista with dorsal and ventral branches. In P. bipartita the paramere is deeply bifurcated: the primary one with two sharp projections apically and three to four sensilla subapically; secondary one slender.

Figures

Figure 9. Phortica unipetala Chen and Wen, 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.