Luzonimyia hirsutina, Gao & Chen, 2014

Gao, Qingsong & Chen, Hongwei, 2014, The genera Luzonimyia and Pararhinoleucophenga from China (Diptera: Drosophilidae), with DNA barcoding information, Zootaxa 3852 (2), pp. 294-300 : 296

Luzonimyia hirsutina sp. nov.

( Figs. 1A , 2 )

Diagnosis. This species resembles L. stictogaster Cao & Chen, 2008 from Yunnnan Province, China in the male terminalia, but can be distinguished by the abdominal pattern ( Fig. 1A, 1D ); the aedeagus thin apically in lateral view ( Fig. 2C ); surstylus with ca. 13 strong setae on inner surface ( Fig. 2A ).

Description. Only characters that depart from the general description given by Cao & Chen (2008) for this genus are provided for brevity. Male: Postvertical setae long, ca. 0.4 times as long as inner vertical setae, standing at vertical ridge. Ocellar setae small, slightly longer than half length of postvertical seta, outside triangle made by ocelli. Frons narrow, black, with dense grey pollinosity. Pedicel and first flagellomere brownish; arista short plumose distally, with pubescence basally. Face, clypeus, gena, postgena and occiput slightly glossy black. Gena narrow and linear. Palpus large, black, lobe-like. Thorax black with dense grey pollinosity. Scutellar black, yellow on tip; subscutellum swollen in lateral view. Legs yellow except for third to fifth tarsomeres brown. Fore femur without long setae on posterior surface; mid femur with 1 row of 4–5 strong setae on anterior surface. Abdominal tergites yellow, with black patches on third to sixth ( Fig. 1A ). Sternites yellow except for fifth black on posterior 1/ 3; sixth sternite developed ( Fig. 2C ). Male terminalia: Syntergosternite 7+8 ( McAlpine 1981; misjudged as sixth tergite in Cao & Chen 2008) very small, narrowed on lateral margins ( Fig. 2A ). Epandrium with ca. 14 setae per side ( Fig. 2A ). Cercus black, nearly oval ( Fig. 2A ). Hypandrium with 3 pairs of paramedian setae ( Fig. 2B, C ).

Measurements. BL = 3.07 mm in holotype (3.17 mm in 1 ♂ paratype), THL = 1.67 mm (1.53 mm), WL = 3.20 mm (3.16 mm), WW = 1.20 mm (1.20 mm), arb = 11/9 (12/8), avd = 0.80 (0.80), adf = 0.50 (0.43), flw = 1.25 (1.37), FW/HW = 0.30 (0.30), ch/o = 0.05 (0.07), prorb = 0.57 (0.52), rcorb = 0.81 (0.86), vb = 0.41 (0.46), dcl = 0.63 (0.60), presctl = 0.61 (0.62), sctl = 1.38 (damaged), sterno = 1.24 (1.18), orbito = 2.00 (1.44), dcp = 0.39 (0.29), sctlp = 0.95 (1.00), C = 5.33 (5.50), 4c = 0.46 (0.48), 4v = 1.27 (1.28), 5x = 0.89 (0.94), ac = 0.82 (0.85), M =0.29 (0.38), C3F = 0.17 (0.17).

Type specimens. Holotype ♂ ( SCAU, No. 124316), CHINA: Menglun, Mengla , Yunnan, alt. 680 m, 10.iv.2010, tree trunk, L Wu . Paratype: 1 ♂ ( SCAU, No. 124317), same data as holotype .

Etymology. From the Latin word: hirsutus, referring to the cercus with dense setea.

Figures

FIGURES 1. Color patterns of male abdominal tergites: A. Luzonimyia hirsutina sp. nov.; B. L. setocauda sp. nov.; C. L. flavipedes Cao & Chen, 2009; D. L. stictogaster Cao & Chen, 2009.

FIGURES 2. Luzonimyia hirsutina sp. nov., male terminalia: A. Syntergosternite 7+8 (syntgst 7+8), epandrium (epand), cercus (cerc) and surstylus (sur) (lateral view); B. surstylus (inner view); C. sixth sternite (6th st), hypandrium (hypd), aedeagus (aed) and aedeagal apodeme (aed a) (ventral view); D. ditto (lateral view). Scale bars = 0.1 mm.