DIPTERA OF THAILAND A summary of the families and genera with references to the species representations Author Papp, L. Author Merz, B. Author Földvári, M. text Acta Zoologica Academiae Scientiarum Hungaricae 2006 2006-07-31 52 2 2 97 269 journal article 10.5281/zenodo.12586111 2064-2474 12586111 Stenocyamops thaii L. PAPP , sp. n. ( Figs 115–123 ) Holotype male ( HNHM , abdomen with genitalia in a plastic microvial with glycerol): THAILAND : Doi Phuka National Park , headquarters, 26–27. XI. 2003 , UV light, leg. L. PEREGOVITS , M. FÖLDVÁRI , Á. KŐRÖSI , A. SZAPPANOS & B. MAKLÁRI-KIS , No. 18. Measurements in mm: body length 1.74, wing length 2.04, wing breadth 0.75. Head all dark but face and genae light grey dusted. Face sharply angulate in profile, slightly narrowed below antennae: at antennae 0.23 mm , at narrowest 0.16 mm . Ocellar triangle well anterior on frons. Inner verticals 0.16 mm long, nearly perpendicular to frontal plane. Distance of bases of anterior and posterior pair of fronto-orbitals along orbitalia 0.07 mm . Genae at narrowest only 0.055 mm broad. Occiput only slightly broadening posteriorly (about middle of eye). First flagellomere with some cilia only apically. Arista with 6 dorsal and 2 ventral long rays behind apical fork. Mesonotum dark brown. Anepisternum with strong, reflecting silvery microtomentum. Metanotum not bulging. Posterior notopleural seta emerging on a conical process, higher on mesonotum, than anterior pair. One pair of scutellar setae. Mid tibial ventroapical seta yellow, 0.14 mm long. Wing brown fumose apically, veins brown. Costa with long thin cilia. Costal section between R2+3 and R4+5 0.40 mm , R4+5 – M 0.16 mm , intracrossvein section of M 0.23 mm , dM-Cu 0.12 mm . Abdomen dark brown, basal two segments yellowish brown. Epandrium yellow. Syntergosternite 7+8 ( Figs 116–117 ) circularly fused, slightly asymmetrical, with a small cranial process near sagittal line, rather short ventrally. Surstyli ( Figs 118–119 ) wholly symmetrical, sharply bipartite: basal part with rounded base and with an almost sharp edge, apical part long, slightly medially curved, but straight in broadest view. Phallus membranous. Hypandrial (genital) complex ( Figs 120–121 ) symmetrical, hypandrium medium-long sagittally, gonopods small, in lateral view with a narrow cranial apex ( Fig. 121 ). Phallapodeme short. Ejaculatory apodeme tripartite ( Figs 122–123 ), in contrast to the bipartite ejaculatory apodeme of Stenomicra or Podocera . A KEY FOR THE GENERA OF STENOMICRIDAE (except Planinasus ) 1. Metanotum bulging. Supra-alar seta lacking. No anal lobe of wing, alula indistinct. Anal cell and anal vein reduced. Female segment 6 with tergite and sternite separated 2 – Metanotum not bulging. Supra-alar seta present. Anal lobe of wing present, alula distinct. Anal cell and anal vein well developed. Female segment 6 with tergite and sternite fused to form a complete ring (female not known in Stenocyamops ) 3 Fig. 115 . Stenocyamops thaii sp. n. , holotype male, habitus (del. A. SZAPPANOS ) Figs 116–123 . Stenocyamops thaii sp. n. , holotype male. 116–117 = pregenital abdominal sclerites: 116 = ventral view, 117 = dorsal view; 118 = surstylus, in broadest extension (epandrial insertion most dorsal), 119 = surstylus in a view perpendicular to basal part (epandrial insertion most ventral), 120 = hypandrial complex , dorsal view (phallus and ejaculatory apodeme omitted), 121 = cranial apex of hypandrial complex , lateral view, 122 = ejaculatory apodeme, dorsal view, 123 = same, lateral view. Scales: 0.2 mm for Figs 116–117, 0.1 mm for Figs 118–123 2. Two pairs of reclinate ors , anterior pair short and thinner. Facial genal setae shorter but more numerous. No postpronotal seta, posterior np far from suture. R2+3 – R4+5 section of costa much longer than R4+5-M section Stenomicra COQUILLETT – Anterior pair of ors large and inclinate. Postpronotal seta present, posterior np only little higher on mesonotum than anterior one. R2+3 – R4+5 section of costa shorter than R4+5-M section Podocera CZERNY 3. Inner vertical seta absent. Face in profile shallowly arched. Hind tibia without a large ventroapical spur. Basal cross-vein present, cell bm distinct from dm . Abdominal sternites less broad. Male syntergosternite 7–8 fused on left side only. Male genitalia strongly asymmetrical, particularly so for surstyli. Ejaculatory apodeme very large Cyamops MELANDER – Inner vertical seta present. Face in profile angulate. Hind tibia with a large ventroapical spur. Basal cross-vein lacking, cells bm and dm confluent. Abdominal sternites very broad. Male syntergosterite 7–8 fused circularly ( Figs 116–117 ). Male genitalia almost completely symmetrical, surstyli completely so. Ejaculatory apodeme very small Stenocyamops L. PAPP , gen. n.