Phortica (Phortica) lanuginosa 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 : 32-33

Phortica (Phortica) lanuginosa Chen & Toda , new species

( Figs. 26–29 )

Diagnosis. – Anepisternum with setulae; aedeagal basal bridge with ca. 10 triangular, strongly sclerotized teeth along margin ( Fig. 29 ).

Material examined. – Holotype male (terminalia dissected), MALAYSIA: Park Headquarters, Mt. Kinabalu , Sabah, coll. M. J. Toda, 11 Mar.1999 ( KPSP).

Description. – Male. Head: Frons dark brown on upper half, brown on lower half. Arista sometimes with 1 small ventral branch.

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

Wing: Smoky.

Legs: All femora slightly brown. Midleg tibia subapically with 3-4 longer setae on anterior surface.

Abdomen: First to fifth tergites yellow; second tergite with brownish black patches submedially; third to fifth tergites each with medially protruded, sublaterally interrupted, black band on posterior margin; sixth tergite nearly entirely black, narrowed on lateral margins, with a few long strong setae on posterolateral margins.

Male terminalia: Epandrium pubescent anteroventrally and dorsomedially, with 9 setae on dorsal to posterolateral portion per side ( Fig. 26 ). Surstylus pubescent and setigerous, with wedge-shaped prensisetae on inner margin ( Fig. 27 ). Additional plate between cerci and 10th sternite pubescent, medially connected to 10th sternite ( Fig. 28 ). Posterolateral lobe of hypandrium undeveloped. Paramere with pubescence distally, 1 sensillum and 4 teeth apically, and 1 small process subapically ( Fig. 29 ). Vertical lobe of gonopods with 1 pair of somewhat triangular lobes basally ( Fig. 29 ). Aedeagal median rod with knot subapically, basally with 1 pair of bridges ( Fig. 29 ).

Female: Unknown.

Measurements: BL = 4.81 mm in holotype; ThL = 2.31 mm; WL = 3.32 mm; WW = 1.44 mm.

Indices: arb = 4/0-1, avd = 0.36, adf = 2.20, flw = 1.30, FW/ HW = 0.40, ch/o = 0.07, prorb = 1.15, rcorb = 0.45, vb = 0.35, dcl = 0.60, presctl = 0.90, sctl = 0.90, sterno = 1.10, orbito = 1.20, dcp = 0.25, sctlp = 0.90, C = 2.00, 4c = 1.47, 4v = 2.59, 5x = 0.80, ac = 3.57, M = 0.47, C3F = 0.72.

Etymology. – From the Latin word “lanuginosus”, meaning clothed with several setulae, referring to the anepisternum.

Distribution. – Malaysia (Sabah).

Remarks. – This species is somewhat similar to P. (P.) cardua in the morphology of arista and paramere, but can be distinguished from it by the setigerous anepisternum and the aedeagal basal bridge (in P. cardua : anepisternum lacking setulae; aedeagal basal bridge with ca. 5 triangular, sclerotized teeth along margin and 2–3 apically sclerotized lobe-like processes).

Figures

Figs. 26–29. Phortica (Phortica) lanuginosa Chen & Toda, new species, male: 26, epandrium and cercus in lateral view; 27, surstylus in frontal view; 28, tenth sternite and additional plate in frontal view; 29, hypandrium, gonopod, paramere and aedeagus in lateral view.