Luzonimyia stictogaster, Cao & Chen, 2008

Cao, Hua-Zhi & Chen, Hong-Wei, 2008, Discovery Of The Genus Luzonimyia Malloch (Insecta: Diptera: Drosophilidae) In China, With Descriptions Of Two New Species, Raffles Bulletin of Zoology 56 (2), pp. 251-254 : 252-254

Luzonimyia stictogaster , new species

( Figs. 8 – 11 )

Diagnosis. – Third abdominal tergite medially and sublaterally with smaller brown to black patches; surstylus extended below at posterolateral corners, with ca. 17–18 curved, strong setae on edge to inner surface ( Figs. 8, 9 ); membranous part of aedeagus not extroversive in ventral view, round basally in lateral view ( Fig. 10 ).

Material examined. – Holotype: male, CHINA: Park Jiaoye (Qiongzhusi, 25°02'N 102°43'E, alt. 2,100 m), Kunming , Yunnan,

coll. Jian-jun Gao, 5 May 2002. Paratype: CHINA: 1 female, Mt. Wuliang (24°32'N 101°01'E, alt. 1,800 m), Jingdong, Simao , Yunnan, on tree trunk , coll. Huazhi Cao, 4 Aug.2006.

Description. – The most morphological characters are shared with L. flavipedes , new species, except for the diagnostic characters mentioned in the following description.

Male terminalia: Epandrium with 3 setae and pubescence ( Fig. 8 ). Cercus slightly ellipse ( Fig. 8 ). Hypandrium with 2 pairs of paramedian setae ( Figs. 10, 11 ).

Female: Sixth tergite and sternite entirely black. Terminalia partially very weak.

Measurements: BL = 3.25 mm in holotype (1 female paratype: 3.37); ThL = 1.70 mm (1.78); WL = 3.25 mm (3.48); WW = 1.35 mm (1.47).

Indices: arb = 14/11 (16/14), avd = 1.00 (0.93), adf = 0.51 (0.58), flw = 1.84 (1.92), FW/HW = 0.32 (0.34), ch/o = 0.06 (0.04), prorb = 0.52 (0.56), rcorb = 0.86 (0.97), vb = 0.50 (0.50), dcl = 0.48 (0.49), presctl = 0.56 (0.51), sctl = (damaged) (1.02), sterno = 0.77 (damaged), orbito = 1.89 (1.77), dcp = 0.33 (0.27), sctlp = 0.78 (0.87), C = 5.95 (6.07), 4c = 0.39 (0.39), 4v = 1.06 (1.13), 5x = 0.53 (0.67), ac = 0.84 (0.76), M = 0.19 (0.25), C3F = 0.25 (0.21).

Etymology. – A combination of the Latin words: stictus + gaster, referring to the abdominal tergites with patches.

Distribution. – China (Yunnan).

Figures

Figs. 8–11. Luzonimyia stictogaster, new species, male: 8, sixth tergite (6th te), epandrium (epan), cercus (cerc) and surstylus (sur) (lateral view); 9, surstylus (inner view); 10, hypandrium (hypa), decasternum (dec), aedeagus (aed) and aedeagal apodeme (aed a) (ventral view); 11, hypandrium (hypa), decasternum (dec), aedeagus (aed) and aedeagal apodeme (aed a) (lateral view). Scale bars: 0.1 mm.