Phortica longipenis 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 : 3957-3959

Phortica longipenis Chen and Gao , sp. nov.

( Figure 4 )

Diagnosis

Arista medially with a belonoid process ( Figure 4A ); vertical process of gonopod strongly sclerotized, forming continuous arch, and with a few processes ( Figure 4C ); aedeagal outer membrane with numerous spine-like spinules ( Figure 4C ).

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

Description

Head. Frons and face nearly black; gena brownish black.

Thorax. Thorax orange brown, with black patches and pollinose pattern. Scutellum black, brown on tip.

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

Abdomen. Third and fourth tergites each with a brown-black posterior band, interrupted medially; fifth and sixth tergites nearly entirely brown-black. Third to fifth sternites distinctly broadened, shorter than width, with several long setae laterally.

Male terminalia. Surstylus covered with epandrium, with about 22 peg-like prensisetae arranged irregularly on its apical margin to inner surface ( Figure 4B ). Paramere basally elongated, with five to seven sensilla ( Figure 4C ). Median rod of aedeagus long, unsclerotized ( Figure 4C ).

Measurements. BL 53.94 mm (range paratypes 5 „: 3.50–4.16); ThL 51.89 mm (1.74– 1.90); WL 53.13 mm (3.00–3.30); WW 51.31 mm (1.20–1.32).

Indices. arb52 (2–3/0), adf51.20 (1.00–1.20), flw51.30 (1.20–1.30), FW/HW50.35 (0.35–0.40), ch/ o50.08 (0.07–0.09), prorb51.15 (1.18–1.25), rcorb50.55 (0.50–0.60), vb50.50 (0.40–0.50), dcl50.50 (0.50–0.55), presctl50.85 (0.85–0.90), sctl51.00 (1.00– 1.05), sterno50.90 (0.85–1.00), orbito51.90 (1.80–2.00), dcp50.22 (0.20–0.25), sctlp51.30 (1.10–1.30), C52.88 (2.11–2.41), 4c51.14 (1.39–1.58), 4v52.50

(2.50–2.85), 5x51.00 (1.00), ac53.20 (3.40–3.80), M50.57 (0.58–0.62), C3F50.69 (0.63–0.74).

Holotype: „, Yunnan: Mt. Jizhu, Binchuan , 1700–1900 m alt., 17–18 August 2000, H.-W. Chen ( SCAU). Paratypes: 55 „, same data as the holotype (10 „, KIZ; 35 „, SCAU; 10 „, SEHU).

Distribution

China (Yunnan).

Relationships

This species resembles P. foliacea ( Tsacas and Okada, 1983) from Taiwan in having the aedeagal outer membrane with distinct spinules, but differs from it in the shape of the arista tip and the vertical process of gonopod (in P. foliacea : arista tip with one process near lateral margin, vertical process of gonopod sclerotized with a few processes). This species is also similar to P. nigrifoliiseta (Takada et al., 1973) from eastern Malaysia in the shape of the vertical process of gonopod, but can be distinguished from it by the distinct spinules on the aedeagal outer membrane (in P. nigrifoliiseta having only minute warts).

The magna species-complex

Amiota (Phortica) magna species-complex Chen and Toda 1997, p 785.

Diagnosis

Surstylus with black, long, thick spine-like prensisetae; additional plate between cerci and tenth sternite lacking pubescence and separated from tenth sternite.

Figures

Figure 4. Phortica longipenis Chen and Gao, sp. nov., „. (A) Arista; (B), epandrium, cercus and surstylus (lateral view); (C) hypandrium, gonopod, parameres and aedeagal median rod (ventral view). Scale bars: 0.1 mm.