Eighteen New Oriental Species Of Poecilosomella Duda (Diptera: Sphaeroceridae) Author Papp, L. text Acta Zoologica Academiae Scientiarum Hungaricae 2002 48 2 107 156 journal article 10.5281/zenodo.12587600 2064-2474 12587600 Poecilosomella ronkayi sp. n. Holotype male ( HNHM ): TAIWAN : Ilan Hsien , Fu-Shan LTER Site , Sep 26, 2000 , leg. L. PAPP , No. 7 – lake shore vegetation and along a brook bed. Measurements in mm: body length ca. 2.31 (not precisely measurable on holotype , abdomen downcurved, ca. 2.50 mm when alive), wing length 2.46, wing width 1.10. Scape plus pedicel 0.155 mm , first flagellomere 0.21 mm long. Genal bristle 0.12 mm long, gena below eye 0.17 mm broad. Genal bristle weak, shorter than genal diameter below eye. Scutellum 0.46 mm long, 0.53 mm broad, apical scutellar seta 0.67 mm . Posterior katepisternal seta 0.22 mm long, anterior one only 0.085 mm . Wing evenly brown, without diffuse brown spots in middle of the r 4+5 radial and medial cells. Second costal section much shorter than third: 0.535 mm , third section 0.895 mm , ratio 0.60. Vein R 2+3 with a distinct vein appendage (stump vein) subapically, i.e. at the turning point of curvature to costa. Apical part of vein R 2+3 0.155 mm , appendage 0.12 mm long. Intercrossvein section of M/ cross-vein dM-Cu 0.19mm / 0.16mm , ratio 1.19. Male fore tibia and basal tarsomeres without long dense hairs. Male mid tibia and basitarsus without long cilia. No mid ventral seta on mid tibia. Mid tibia with a distinct ventroapical seta, which is much longer than diameter of tibia subapically. Distribution: hitherto known only from Taiwan . Etymology. I name this new species in honour of my dear colleague, Dr. László Ronkay (Lepidoptera Collection, Department of Zoology, HNHM ), for his mental and material support, and for sharing his collections in Taiwan in 2000. P. ronkayi sp. n. is the sister-species of P. meijerei ( DUDA , 1925 ) ; see remarks under P. meijerei above.