Phortica (Ashima) biclavata 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 : 499-500

Phortica (Ashima) biclavata Chen , sp. nov.

( Figs 16–20 )

Diagnosis. This species is similar to P. foliisetoides Chen & Toda in Chen et al., 2005 from southern China in the shape of paramere, but can be distinguished from it by the vertical process of gonopods: lateral lobes each with 1 finely serrated process anteriorly ( Figs 18, 19 ). In P. foliisetoides : left lateral lobe of vertical process of gonopods lacking such process; right lobe with short bifurcation apically (see Figs 12, 13 in Chen et al., 2005b).

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 several setae on inner surface, lacking pubescence and prensisetae ( Fig. 17 ). Paramere apically roundly knobbed and finely serrated, basally with 3 sensilla ( Figs 18, 19 ). Female terminalia ( Fig. 20 ): Seventh sternite roundly broadened; eighth sternite (oviscapt) slightly triangular.

Measurements. BL = 2.48 mm in holotype (range in paratypes: 2.25–2.68 mm in 63, 2.32–3.12 mm in 4ƤƤ), ThL = 1.16 mm (1.12–1.28 mm in 3, 1.20–1.48 mm in ƤƤ), WL = 2.04 mm (1.88–2.07 mm in 3, 2.02–2.28 mm in ƤƤ), WW = 0.92 mm (0.83–0.92 mm in 3, 0.84–0.96 mm in ƤƤ), arb = 0/0 in 3, 4–5/ 3–5 in ƤƤ, avd = 0.48–0.50 in ƤƤ, adf = 0.60–0.75 in ƤƤ, flw = 1.10 (1.00–1.30), FW/HW = 0.35 (0.30–0.40), ch/o = 0.06 (0.05–0.07), prorb = 1.60 (1.33–1.67), rcorb = 0.70 (0.60–0.75), vb = 0.35 (0.30–0.45), dcl = 0.60 (0.50–0.60), presctl = 0.60 (0.55–0.60), sctl = 1.10 (1.00–1.15), sterno = 1.00 (1.00), orbito = 2.10 (2.00–2.20), dcp = 0.24 (0.23–0.25), sctlp = 1.15 (1.10–1.20), C = 1.93 (1.75–2.23), 4c = 1.75 (1.40–2.00), 4v = 2.74 (2.44–3.13), 5x = 1.00 (1.00–1.20), ac = 2.80 (2.33–4.00), M = 0.75 (0.67–1.00), C3F = 0.50 (0.50–0.62).

Type materials. Holotype 3 ( SEHU), MYANMAR: Yangon, 14.i.1982, MJ Toda. Paratypes: MYANMAR: 63 8ƤƤ ( SEHU), Yangon, 13–15.i.1982, MJ Toda; 43 8ƤƤ (33 7ƤƤ in SEHU; 131Ƥ in SCAU, Nos 121262, 63), Mandalay, 26.xii.1981 – 2.i.1982, MJ Toda.

Distribution. Myanmar.

Etymology. A combination of the Latin words: bi- + clavatus, referring to the club-shaped parameres, as well as club-shaped lateral processes of the fused gonopods.

Figures

FIGURES 16 – 20. Phortica (Ashima) biclavata Chen, sp. nov., 16 - 19 male terminalia: 16. Epandrium, cercus and surstylus (lateral view); 17. surstylus (inner view); 18, 19. hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme (ventral and lateral views); 20. female fifth to eighth sternites.

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.