Phortica (Phortica) melanopous, 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 : 20-21

Phortica (Phortica) melanopous sp. nov.

( Figs 3–5 )

Type material. Holotype ɗ ( MNHN): KENYA - labeled “Kakamega equatorial forest, 11.x.2002, S. Prigent”. Paratypes: 2ɗ, same data as the holotype except for 11–23.x.2002 (1ɗ in NMK; 1ɗ in SCAU).

Etymology. A combination of the Greek words: melas and pous meaning black leg.

Diagnosis. Legs dark brown except for yellow on fore and hind knee joints and all tarsi; vertical process of gonopods sclerotized on postero-median and anterior margin, broadened distally, with 1 sclerotized process medially ( Fig. 5 ); aedeagal median rod partly sclerotized, with membranous part bearing several minute warts ( Fig. 5 ); outer membranous tube with numerous, small spine-like pieces ( Fig. 5 ).

Description. Male: Eyes brown. Ocellar triangle black. Frons brown on upper 1/2, black on lower 1/2, with thick dense setae medially. Fronto-orbital plate silvery white. Pedicel and first flagellomere almost yellow; arista plumose, not expanded apically. 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. Fore tarsomere V lacking long setae apically. Abdominal tergites I+II yellow medially, black laterally; the rest tergites black. Sternites yellow; III to VI slightly longer than respective width. Male terminalia: Epandrium mid-dorsally constricted, laterally broadened, with dense setae ( Fig. 3 ). Surstylus mostly covered with epandrium, with numerous setae and approximately 20 small prensisetae on ventral margin to inner surface ( Figs 3, 4 ). Gonopods nearly symmetrical ( Fig. 5 ). Paramere short, rod-shaped, slightly sclerotized, apically knobbed, basally recurved with 6–7 sensilla ( Fig. 5 ).

Measurements. BL = 2.95 mm in the holotype (range in 2ɗ paratypes: 2.78–2.90); ThL = 1.40 mm (1.35–1.40); WL = 2.78 mm (2.70–2.80); WW = 1.25 mm (1.10–1.20). Indices: arb = 5/3 (5–6/3), avd = 0.85 (0.80–0.90), adf = 1.10 (1.10–1.20), flw = 1.40 (1.40–1.50), FW/HW = 0.45 (0.45), ch/o = 0.06 (0.07), prorb = damaged (damaged), rcorb = damaged (damaged), vb = 0.45 (0.45), dcl = 0.60 (0.50–0.60), presctl = 0.85 (0.80–0.85), sctl = 1.00 (1.00), sterno = 1.00 (1.00), orbito = 1.75 (1.70–1.75), dcp = 0.23 (0.23), sctlp = 1.20 (1.20), C = 2.40 (2.58–2.61), 4c = 1.25 (1.11–1.21), 4v = 2.25 (2.14–2.47), 5x = 1.19 (1.00–1.19), ac = 2.50 (2.30–2.40), M = 0.65 (0.54–0.68), C3F = 0.64 (0.60).

Distribution. Kenya.

Figures

FIGURES 3 – 5. Phortica (Phortica) melanopous sp. nov. ♂: 3. epandrium, cercus and surstylus (lateral view); 4. surstylus (inner view); 5. hypandrium, gonopods, paramere, aedeagal median rodand aedeagal apodeme (lateral view).