Phortica (Phortica) angulata, 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 : 24-25

Phortica (Phortica) angulata sp. nov.

( Figs 12–17 )

Type material. Holotype ɗ ( MNHN): KENYA - labeled “ Kakamega equatorial forest, 11.x.2002, S. Prigent”. Paratypes: 6ɗ, same data as the holotype except for 11–23.x.2002 (2ɗ in MNHN; 2ɗ in NMK; 2ɗ in SCAU).

Etymology. From the Latin word: angulatus, referring to the epandrium triangularly protruded on ventral margin.

Diagnosis. Aedeagal median rod apically curved, with 2 pointed projections ( Fig. 16 ); vertical process of gonopods: right, lateral lobe with 3 projections, left, lateral lobe with 4 projections ( Figs 16, 17 ).

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. 12 ). 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 ( Fig. 13 ). Abdominal tergite 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. 14 ). Surstylus with numerous setae and approximately 14 prensisetae on ventral margin to inner surface ( Fig. 15 ). Paramere apically round, not knobbed, basally with 4 sensilla ( Fig. 16 ). Vertical process of gonopods strongly sclerotized, deeply bifurcated asymmetrically, connects to base of gonopods by a pair of rod-like bridges ( Figs 16, 17 ). Aedeagal median rod single, strongly sclerotized ( Fig. 16 ).

Measurements. BL = 2.66 mm in the holotype (range in 4ɗ paratypes: 2.46–2.66 mm); ThL = 1.00 mm (0.95–1.00); WL = 2.20 mm (1.86–2.20); WW = 1.10 mm (1.00–1.10). Indices: arb = 2/0 (2/0), adf = 1.10 (1.00–1.10), flw = 1.20 (1.10–1.20), FW/HW = 0.40 (0.40–0.45), ch/o = 0.07 (0.06–0.07), prorb = 1.10 (1.10), rcorb = 0.60 (0.45–0.60), vb = 0.40 (0.40–0.45), dcl = 0.55 (0.55–0.60), presctl = 0.80 (0.80), sctl = 1.10 (1.10), sterno = 1.00 (1.00–1.05), orbito = 1.70 (1.70–1.80), dcp = 0.25 (0.23–0.25), sctlp = 1.15 (1.15–1.20), C = 2.22 (2.14–2.39), 4c =1.43 (1.42–1.50), 4v = 2.71 (2.72–3.08), 5x = 1.20 (1.10–1.20), ac = 2.50 (2.53– 2.63), M = 0.86 (0.83–0.87), C3F = 0.64 (0.63–0.65).

Distribution. Kenya.

Figures

FIGURES 12 – 17. Phortica (Phortica) angulata sp. nov. ♂: 12. arista; 13. fore tarsomeres; 14. epandrium, cercus and surstylus (lateral view); 15. surstylus (inner view); 16. hypandrium, gonopods, paramere, aedeagal median rod and aedeagal apodeme (lateral view); 17. left, lateral lobe on vertical process of gonopods (lateral view).