Phortica (Phortica) monocaena 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 : 501

Phortica (Phortica) monocaena Chen , sp. nov.

( Figs 23–25 )

Diagnosis. This species is similar to P. magna (Okada, 1960) from Japan and central China in the shape of paramere and the vertical process of gonopods without spines distally, but differs from it in having the surstylus triangularly protruded submedially ( Fig. 23 ) and the ventral bridge of aedeagus with distally bifurcated process ( Fig. 25 ).

Description. Frons black above, brown below, with a few thin, sparse interfrontal setae. Pedicel and first flagellomere grayish yellow. Face brown, with yellowish white patches on lower corners. Clypeus white medially, black laterally. Thorax orange brown, with black patches and pollinose pattern. Scutellum orange yellow, with brown patch medially. Legs yellow, dark brown on fore- and midleg femora, with 3 dark rings on each tibia. Abdominal first to fourth tergites yellow; second tergite with 2 blackish patches each side (submedially and laterally); third and fourth tergites each with broad, medially slightly protruded, black band on posterior margin and 1 yellow patch laterally each side; fifth and sixth tergites nearly entirely black; sixth tergite broadened at posterior corners of lateral margins, 1.2 times broader than its dorsomedian section (see Fig. 1 in Chen et al., 2007). Male terminalia: Epandrium lacking pubescence anteroventrally, with 7 setae on dorsal to posterolateral portion each side ( Fig. 23 ). Surstylus lacking pubescence, with 1 very strong spine ( Fig. 23 ). Additional plate between cerci and tenth sternite lacking pubescence ( Fig. 24 ), Posterolateral lobe of hypandrium lacking pubescence ( Fig. 25 ). Paramere devoid of pubescence and tooth but with 3 sensilla apically ( Fig. 25 ). Aedeagal membranous tube with minute spinules medially ( Fig. 25 ).

Measurements. BL = 3.24 mm; ThL = 1.73 mm; WL = 3.02 mm; WW = 1.16 mm, arb = 4/0, adf = 1.50, flw = 1.40, FW/HW = 0.45, ch/o = 0.06, prorb = 1.10, rcorb = 0.50, vb = 0.30, dcl = 0.60, presctl = 0.65, sctl = 1.00, sterno = 0.90, orbito = 1.45, dcp = 0.25, sctlp = 1.00, C = 2.14, 4c = 2.10, 4v = 3.70, 5x = 0.67, ac = 4.20, M = 0.60, C3F = 0.67.

Type material. Holotype 3 ( MZB), INDONESIA: Gunung Halimun, West Java, 26.xii.2001, MJ Toda.

Distribution. Indonesia (Java).

Etymology. A combination of the Greek words: “mono-”+ “caena”, meaning single spine, referring to the surstylus with a spine.

Figures

FIGURES 23 – 25. Phortica (Phortica) monocaena Chen, sp. nov., male terminalia: 23. Epandrium, cercus and surstylus (lateral view); 24. tenth sternite and additional plate (frontal view); 25. hypandrium, gonopods, paramere, aedeagus and aedeagal apodeme (lateral view).

FIGURES 1 – 3. Phortica (Allophortica) chingolaensis Chen & Máca, sp. nov., male terminalia: 1. Epandrium (epand) and cercus (cerc) (lateral view); 2. surstylus (ventral view); 3. hypandrium (hypd), paramere (pm), gonopods (gon), aedeagal median rod (aed) and aedeagal apodeme (aed a) (lateral view) (all scale lines = 0.1 mm through this paper).