Phortica (Phortica) pasohensis 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 : 37-38

Phortica (Phortica) pasohensis Chen & Toda , new species

( Figs. 50–53 )

Diagnosis. – Aedeagal median rod subbasally with single, apically symmetrically bifurcated process ( Fig. 53 ); aedeagal ventral bridge distally expanded ( Fig. 53 ); aedeagal basal bridge with small flap bearing 2 acute projections anteriorly and medioventrally ( Fig. 53 ).

Material examined. – Holotype male, MALAYSIA: Pasoh, Selangor, Malaya, coll. N. Osawa, 2–9 May.1995 ( FRIM).

Decription. – Male. Thorax: Orange yellow. Scutellum with trifurcate brown patch, pale yellow on tip.

Wing: Hyaline.

Legs: All femora partly brown. Midleg tibia subapically with 2-4 longer setae on anterior surface.

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

Male terminalia: Epandrium pubescent anteroventrally and dorsomedially, with ca. 12 setae on dorsal to posterolateral portion per side ( Fig. 50 ). Surstylus with pubescence basally and several wedge-shaped prensisetae on apical margin to inner surface ( Fig. 51 ). Additional plate between cerci and 10th sternite pubescent, medially connected to 10th sternite ( Fig. 52 ). Posterolateral lobe of hypandrium undeveloped. Paramere expanded distally, pubescent between medial and proximal processes; apical process with 1 sensillum; medial process with 1 sensillum and 2 teeth ( Fig. 53 ). Vertical process of gonopods apically with 4-5 sclerotized projections per side ( Fig. 53 ). Aedeagus with 2 pairs of bridges ( Fig. 53 ).

Female: Unknown.

Measurements: BL = 3.47 mm in holotype; ThL = 1.76 mm; WL = 2.60 mm; WW = 1.24 mm.

Indices: arb = 5-6/3-4, avd = 0.60, adf = 1.80, flw = 1.70, FW/HW = 0.38, ch/o = 0.06, prorb = 1.10, rcorb = 0.45, vb = 0.45, dcl = 0.65, presctl = 0.70, sctl = 1.05, sterno = 0.85, orbito = 1.40, dcp = 0.23, sctlp = 1.10, C = 1.90, 4c = 1.67, 4v = 2.67, 5x = 1.33, ac =4.00, M = 0.67, C3F = 0.70.

Etymology. – Pertaining to the type locality.

Distribution. – Malaysia (Malaya).

Remarks. – This species is very similar to P. (P.) expansa in the morphology of male terminalia, but can be distinguished from it by the diagnostic characters.

Figures

Figs. 50–53. Phortica (Phortica) pasohensis Chen & Toda, new species, male: 50, epandrium and cercus in lateral view; 51, surstylus in frontal view; 52, tenth sternite and additional plate in frontal view; 53, hypandrium, gonopod, paramere and aedeagus in lateral view.