Phortica (Phortica) liewi Chen & Toda, 2007

Chen, Hong-Wei, Toda, Masanori J., Lakim, Maklarin B. & Mohamed, Maryati B., 2007, The Phortica Sensu Stricto (Insecta: Diptera: Drosophilidae) From Malaysia, Raffles Bulletin of Zoology 55 (1), pp. 23-41 : 29-30

Phortica (Phortica) liewi Chen & Toda , new species

( Figs. 16–19 )

Diagnosis. – Aedeagal median rod submedially with 1 pair of small symmetric and 1 pair of long, apically unbifurcated projections ( Fig. 19 ).

Material examined. – Holotype male, MALAYSIA: Park Headquarters, Mt. Kinabalu , Sabaha, coll. M. J. Toda, 11 Mar.1999 ( KPSP) . Paratypes: MALAYSIA: 2 males, same data as holotype (1 male SCAU, 1 male SEHU) ; 2 males (terminalia dissected), same data as holotype except 13 Mar.1999 (1 male KPSP, 1 male ITBC) ; 4 males (3 male terminalia dissected), same data as holotype except 20 Mar.1999 (2 males FRIM, 1 male SCAU, 1 male SEHU); Poring , Sabah , 2 males, coll. M. J. Toda, 25 Mar.1999 (1 male KPSP, 1 male ITBC); Ulu Senagang, Crocker Range , Sabah , 1 male (terminalia dissected), coll. M. J. Toda, 18 Oct.1999 ( SEHU) .

Description. – Male. Head: Frons brown with large triangular black patch on upper half.

Thorax: Orange yellow. Scutellum with trifurcate brown patch, yellowish white on tip.

Wing: Slightly smoky.

Legs: All femora partly brownish. Midleg tibia subapically lacking longer setae on anterior surface.

Abdomen: First to fifth tergites yellow; second tergite with black patches submedially and laterally; third tergite with medially and laterally slightly protruded, sublaterally nearly interrupted, brown band on posterior margin; fourth and fifth tergites each with medially and laterally slightly protruded, brown band on posterior margin and 1 pair of small yellow patches sublaterally; sixth tergite nearly entirely black except yellow medial line.

Male terminalia: Epandrium pubescent anteroventrally and dorsomedially, with 7 setae near dorsal to posterolateral margin per side ( Fig. 16 ). Surstylus lacking pubescence, with several wedge-shaped prensisetae on apical margin to inner surface ( Fig. 17 ). Additional plate between cerci and 10th sternite pubescent, medially connected to 10th sternite ( Fig. 18 ). Posterolateral lobe of hypandrium large, lacking pubescence ( Fig. 19 ). Paramere lacking pubescence; apical process with 3 teeth apically and 1 sensillum subapically; median process triangular; proximal process slender, with 1 sensillum apically ( Fig. 19 ). Vertical process of gonopods nearly triangular ( Fig. 19 ). Aedeagal median rod apically with 2 pairs of (inner longer and outer small) triangular processes, subbasally with 1 pair of small processes; outer membranous tube convoluted apically, with transparent minute spinules subapically and basally ( Fig. 19 ). Aedeagus with 1 pair of looped bridges basally ( Fig. 19 ).

Female: Unknown.

Measurements: BL = 3.75 mm in holotype (range in 4 male paratypes: 3.52-3.87); ThL = 1.78 mm (1.69-1.83); WL = 3.17 mm (2.80-3.40); WW = 1.40 mm (1.24-1.36).

Indices: arb = 4/2-3 (3-5/2-3), avd = 0.47 (0.43-0.50), adf = 1.90 (1.80-1-2.10), flw = 1.30 (1.20-1.40), FW/HW = 0.45 (0.40-0.45), ch/o = 0.08 (0.08-0.09), prorb = 1.05 (1.00-1.10), rcorb = 0.50 (0.45-0.50), vb = 0.40 (0.40-0.45), dcl = 0.60 (0.55-0.60), presctl = 0.65 (0.60-0.70), sctl = 1.10 (1.00-1.15), sterno = 0.85 (0.85-0.95), orbito = 1.30 (1.20-1.35), dcp = 0.23 (0.22-0.24), sctlp = 1.15 (1.05-1.15), C = 1.96 (1.81- 2.25), 4c = 1.77 (1.53-1.91), 4v = 2.85 (2.77-3.25), 5x = 1.00 (1.00-1.14), ac = 4.60 (4.00-4.20), M = 0.62 (0.58-0.73), C3F = 0.74 (0.76-0.85).

Etymology. – Patronym, in honor of Dr. Francis Liew of the Sabah Parks, Malaysia.

Distribution. – Malaysia (Sabah).

Remarks. – This species is similar to P. (P.) linae (Máca & Chen, in Máca & Lin, 1993) from Taiwan and central China in the morphology of phallic organs, but can be distinguished from it by the aedeagal median rod (in P. linae : aedeagal median rod subapically with 1 pair of asymmetric or only 1 triangular projection(s) in addition to 1 pair of submedial long projections).

Figures

Figs. 16–19. Phortica (Phortica) liewi Chen & Toda, new species, male: 16, epandrium and cercus in lateral view; 17, surstylus in frontal view; 18, tenth sternite and additional plate in frontal view; 19, hypandrium, gonopod, paramere and aedeagus in lateral view.