Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 99. (Budapest 2007)

Papp, L.: A review of the Old World Trigonometopini Becker (Diptera: Lauxaniidae)

Remarks - This is one of the largest species in the tribe. Luzonomyza sinica SHATALKIN, 1998 - Material studied: Thailand, 2004, leg. L. PAPP &c M. FÖLDVÁRI (HNHM): 1 female: Trang Prov., Khao Chong Botanic Garden, rainforest, Nov 18, No. 36; 1 male 1 female: ibid., Nov 22, No. 43; 1 female: Khao Pu - Khao Ya N. P., along a forest brook below the (Pak Yam) waterfall, Nov 21, No. 42; 1 male 1 female: Trang Prov., Palian District, Nam Tok Nam Pan Forest Park, over streams & vegetation around waterfalls, Nov 17, No. 35; 1 male: Trang Prov., Khao Chong Botanic Garden, along a forest path, Nov 20, No. 41 (cf. PAPP et al. 2006). Male genitalia (Figs 11-16) with characteristic features. Epandrium with strong (though not extremely long) dorso-caudal pair of processes (Fig. 11), surstylar process very distinct and forms a dorso-caudally directed process (Figs 11, 15). Cerci small with medium-long setae only. Gonites (Figs 13-14) with a strong basal part and an intricate apical part with several processes, apex narrow and curved. Phallapodeme (Figs 13, 16) medium-large, and not very high in lateral view. Ejaculatory apodeme (Fig. 16) not long, but apical lamellae large. Luzonomyza vietnamensis sp. n. (Fig. 75) Type material- Holotype female (HNHM): "Vietnam, Huong Son, 19.8.1963., leg. PócsT". Description - Measurements in mm: body length 4.18, wing length 3.60, wing width 1.32. Face, cheeks and genae dark greyish brown, antennái grooves and a pair of vertical stripes medially to ptilinal suture (above mouth .opening) lighter. A similarly lighter stripe discernible from cheek to ventral margin of posterior gena. Facial keel high and sharp (Fig. 75). Frons covered with dense proclinate setae. Frons with a dark median stripe between ocellar triangle and lunule. Anterior fronto-orbital pair emerges posteriorly to middle of frons, both ors pairs short. No ocellar setae, postocellars medium-long, cruciate. Clypeus dark greyish brown. Palpi very thin, all black. Mesonotum and pleura dark greyish brown, mesonotum with a sagittal and 2 dorsocentral light grey stripes. Scutellum with a medial, posteriorly widening light grey stripe, lateral borders also light. Only 1 strong katepisternal seta. Wing similar to L. sinica: broad brown radial and apical colour (latter diffusely margined), both cross-veins broad brown bordered. Veins brown. Only 2 stronger black setae distally to R2+3 on costal vein. All tibiae and tarsi yellow. Femora greyish brown. Hind tibia with a curved ventral spur of 0.09 mm. Female abdomen basically ochre, tergites with broad greyish brown distal margins. Last abdominal sternites dark. Cereal setae short and fine. Male unknown. Remarks - L. vietnamensis sp. n. is similar to L. nigripalpis SHATALKIN, 1997, but its all tarsi are yellow, its facial keel sharp and protruding (see also key below).