Phortica (Phortica)

Chen, Hong-Wei, Toda, Masanori J., Lakim, Maklarin B. & Mohamed, Maryati B., 2007, The Phortica Sensu Stricto (Insecta: Diptera: Drosophilidae) From Malaysia, Raffles Bulletin of Zoology 55 (1), pp. 23-41 : 27-28

Phortica (Phortica) ni Chen & Toda, new species

( Figs. 6–10 )

Diagnosis. – Male sixth tergite with single prickly, anteriad curved projection at anteroventral corner ( Fig. 6 ); lateral process of paramere ca. 2/3 as long as apical one, apically with 1 sensillum and 1 black spine ( Fig. 10 ).

Material examined. – Holotype male (terminalia dissected), MALAYSIA: Park Headquarters, Mt. Kinabalu , Sabah, coll. M. J. Toda, 11 Mar.1999 ( KPSP) . Paratype: 1 male, same data as holotype ( SEHU) .

Description. – Male. Head: Frons brown with large triangular black patch on upper half.

Thorax: Orange yellow. Scutellum with triangular brownishblack patch.

Wing: Slightly smoky on anterior margin.

Legs: All femora dark brown except apical portions. Midleg tibia subapically with 2-4 longer setae on anterior surface.

Abdomem: First to fifth tergites yellow; second to fifth tergites each with brownish black band on posterior margin and 1 pair of yellow patches anterolaterally; caudal band medially broadly interrupted on second tergite, but protruded on third to fifth; sixth tergite nearly entirely black except yellow medial line.

Male terminalia: Epandrium lacking pubescence anteroventrally, with 9 setae on dorsal to posterolateral portion per side ( Fig. 7 ). Surstylus lacking pubescence, with several, apically rounded prensisetae ( Fig. 8 ). Additional plate between cerci and 10th sternite pubescent, medially connected to 10th sternite ( Fig. 9 ). Posterolateral lobe of hypandrium pubescent ( Fig. 10 ). Aedeagal median rod with knot subapically and 1 pair of bridges basally ( Fig. 10 ).

Female: Unknown.

Measurements: BL = 4.06 mm in holotype (1 male paratype: 4.57); ThL = 2.13 mm (2.06); WL = 3.32 mm (3.36); WW = 1.40 mm (1.48).

Indices: arb = 4-5/2 (5/2), avd = 0.60 (0.60), adf = 1.65 (1.65), flw = 1.50 (1.40), FW/HW = 0.40 (0.35), ch/o = 0.08 (0.08), prorb = 1.15 (1.10), rcorb = 0.40 (0.35), vb = 0.35 (0.40), dcl = 0.60 (0.60), presctl = 0.65 (0.55), sctl = 1.10 (1.10), sterno = 0.90 (0.85), orbito = 1.40 (1.40), dcp = 0.24 (0.23), sctlp = 1.10 (1.00), C = 2.27 (2.24), 4c = 1.47 (1.62), 4v = 2.60 (2.92), 5x = 0.90 (0.80), ac = 3.67 (3.50), M = 0.60 (0.62), C3F = 0.64 (0.67).

Etymology. – In reference to the paramere looking like Greek letter ‘niu’ in lateral view.

Distribution. – Malaysia (Sabah).

Remarks. – This species is very similar to P. (P.) biprotrusa (Chen & Toda, 1998) from Yunnan, China, in the male sixth tergite with prickly process at the anteroventral corner, but can be distinguished from it by the posteroventral corners of male sixth tergite (in P. biprotrusa : with 2 prickly projections per side).

Figures

Figs. 6–10. Phortica (Phortica) ni Chen & Toda, new species, male: 6, sixth tergite in ventral view; 7, epandrium and cercus in lateral view; 8, surstylus in frontal view; 9, tenth sternite and additional plate in frontal view; 10, hypandrium, gonopod, paramere and aedeagus in lateral view.