Phortica (Ashima) nakanoi Chen

Chen, Hongwei & Máca, Jan, 2012, Ten new species of the genus Phortica from the Afrotropical and Oriental regions (Diptera: Drosophilidae), Zootaxa 3478, pp. 493-509 : 497-498

Phortica (Ashima) nakanoi Chen , sp. nov.

( Figs 11–15 )

Diagnosis. This species is similar to P. foliiseta Duda, 1923 from Taiwan in the paramere, but can be distinguished from it by the vertical process of gonopods: the left lobe expanded submedially in ventral view ( Fig. 13 ); the right lobe strongly expanded medially in lateral view ( Fig. 14 ). In P. foliiseta , lobes of the vertical process of gonopods are not expanded medially (see Figs 4, 5 in Tsacas & Okada, 1983).

Description. Frons brown, with thick, dense interfrontal setae. Pedicel and first flagellomere yellowish. Arista expanded apically, without dorsal and ventral branches in male. Face brown, with yellowish white patches on lower corners. Clypeus medially white, laterally black. Thorax and scutellum orange brown. Legs yellow, with neither submedial, dark spots on femora nor dark rings on tibiae; fifth tarsomere of foreleg with long seta apically. Only third abdominal sternite distinctly broadened, shorter than wide, with several long setae laterally; fourth and fifth sternites longer than wide; sixth sternite lacking long setae laterally. Male terminalia: Surstylus with pubescence and several setae on inner surface, lacking prensisetae ( Fig. 12 ). Paramere long, apically roundly knobbed and finely serrated, basally with 3–4 sensilla ( Figs 13, 14 ). Female terminalia ( Fig. 15 ): Seventh sternite (st 7) roundly broadened basally; eighth sternite (oviscapt, ovi) slightly triangular, pointed basally.

Measurements. BL = 2.88 mm in holotype (range in paratypes: 2.64–3.08 mm in 53, 3.00– 3.94 mm in 4ƤƤ); ThL = 1.36 mm (1.20–1.36 mm in 3, 1.56 mm in ƤƤ), WL = 2.02 mm (2.08–2.20 mm in 3, 2.28–2.56 mm in ƤƤ), WW = 0.96 mm (0.92–1.00 mm in 3, 1.00– 1.16 mm in ƤƤ), arb = 0/0 in 3, 5–6/ 5–6 in ƤƤ, avd = 0.50–0.67 in ƤƤ, adf = 0.90–0.95 in ƤƤ, flw = 1.10 (1.15–1.50), FW/HW = 0.40 (0.35–0.40), ch/o = 0.07 (0.06–0.08), prorb = 1.33 (1.10–1.42), rcorb = 0.60 (0.55–0.70), vb = 0.45 (0.30–0.45), dcl = 0.60 (0.55–0.60), presctl = 0.47 (0.46–0.60), sctl = 1.10 (1.00–1.20), sterno = 1.00 (1.00–1.10), orbito = 2.00 (1.85–2.20), dcp = 0.25 (0.23–0.25), sctlp = 1.10 (1.10–1.20), C = 1.81 (1.77–2.00), 4c = 2.00 (1.89–2.00), 4v = 3.25 (2.75–3.63), 5x = 0.83 (0.86–1.00), ac = 4.00 (3.40–4.25), M = 0.63 (0.78–0.88), C3F = 0.63 (0.53–0.65).

Type materials. Holotype 3 ( MZB) and paratypes 63 13ƤƤ (33 10ƤƤ in MZB; 23 2ƤƤ in SEHU; 131Ƥ in SCAU, Nos 120960, 61), INDONESIA: Padang, West Sumatra, 11.xii.1989, banana trap, S. Nakano.

Distribution. Indonesia (Sumatra).

Etymology. Patronym, after the the collector´s name.

Figures

FIGURES 11 – 15. Phortica (Ashima) nakanoi Chen, sp. nov., 11 – 14 male terminalia: 11. Epandrium, cercus and surstylus (lateral view); 12. surstylus (inner view); 13, 14. hypandrium, parameres, gonopods and aedeagal apodeme (ventral and lateral views); 15. female fifth to eighth sternites.

FIGURES 4 – 7. Phortica (Ashima) eseta Chen, sp. nov., male terminalia: 4. Epandrium, cercus and surstylus (lateral view); 5. surstylus (inner view); 6, 7. hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme (ventral and lateral views).