Phortica (Phortica) unispina, Prigent, Stéphane & Chen, Hong-Wei, 2008

Prigent, Stéphane & Chen, Hong-Wei, 2008, A survey of the genus Phortica Schiner from Kenya, Africa (Diptera: Drosophilidae), Zootaxa 1773, pp. 18-30 : 26-27

Phortica (Phortica) unispina sp. nov.

( Figs 23–26 )

Type material. Holotype ɗ ( MNHN): KENYA - labeled “Kakamega equatorial forest, 11.x.2002, S. Prigent”. Etymology. A combination of the Latin words: unus and spina, referring to the aedeagal median rod ending in a single spine.

Diagnosis. Aedeagal median rod nearly straight, pointed apically ( Fig. 26 ); paramere apically slightly sclerotized, pointed, basally expanded ( Fig. 26 ); vertical process of gonopods: right and left, lateral lobe each with a less sclerotized projections ( Fig. 26 ).

Description. Male: Eyes brown-red. Ocellar triangle black. Frons brown, with 2 rows of thick dense setae. Fronto-orbital plate yellow-brown. Pedicel and first flagellomere almost grey-yellow; arista plumose, expanded apically, without ventral branches ( Fig. 23 ). Face yellow-brown on upper 1/2, dark brown on lower 1/2. Clypeus medially white-yellow, laterally black. Gena and postgena brown to dark brown. Palpus brown basally, grey-yellow distally. Thorax and scutellum orange-brown, with black patches and pollinose pattern. Legs yellow except for fore femur brownish; fore tarsomere V with 1 long seta apically. Abdominal tergites I+II yellow; the rest brown. Sternites III to VI slightly longer than respective width. Male terminalia: Epandrium mid-dorsally constricted, laterally broadened, triangularly protruded on ventral margin, with dense setae ( Fig. 24 ). Surstylus with numerous setae and approximately 11 small prensisetae on ventral margin to inner surface ( Fig. 25 ). Paramere apically pointed, not knobbed, basally broadened, with 4 sensilla ( Fig. 26 ). Vertical process of gonopods strongly sclerotized, asymmetrical bifurcated to lateral lobes, which connected to base of gonopods by a pair of rod-like bridges; right and left, lateral lobe each with three projections ( Fig. 26 ). Aedeagal median rod single, strongly sclerotized ( Fig. 26 ).

Measurements. BL = 2.30 mm in holotype; ThL = 1.00 mm; WL = 1.95 mm; WW = 0.90 mm. Indices: arb = 2–3/0, adf = 1.00, flw = 1.30, FW/HW = 0.40, ch/o = 0.06, prorb = (damaged), rcorb = (damaged), vb = 0.45, dcl = 0.65, presctl = 0.80, sctl = 1.00, sterno = 1.10, orbito = 1.50, dcp = 0.25, sctlp = 1.20, C = 2.35, 4c = 1.31, 4v = 2.46, 5x = 1.00, ac = 2.83, M = 0.62, C3F = 0.58.

Distribution. Kenya.

Figures

FIGURES 23 – 26. Phortica (Phortica) unispina sp. nov. ♂: 23. arista; 24. epandrium, cercus and surstylus (lateral view); 25. surstylus (inner view); 26. hypandrium, gonopods, paramere and aedeagal median rod (ventral view).