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 meijerei ( DUDA , 1925 ) ( Figs 14–15 ) Material studied: 3 males ( ROM , 1 in HNHM ): INDONESIA , Sumatra , W. Sumatra : Kerinci-Seblat Nat. Pk. , trial to L. Tujuh , 14 SEP 1989 . B Hubley , DC Darling , ROM 893074 – 1 ° rainforest, 1640 m , screen sweep, 1°42’N , 101°19’E . Gena 0.155 mm broad below eye, genal bristle 0.10 mm long. Apical section of vein R 2+3 0.17 mm , appendage 0.18 mm long. Scape plus pedicel are 0.155 mm , first flagellomere 0.225 mm long. Abdominal tergite 2 with a U or V-shaped depression (as long as tergite) medially. Third tergite bears a patch of 9–10 long setae on lateral margin of the abdomen. Surstylus ( Fig. 14 ) peculiar: anterior lobe broad and broadly rounded apically, posterior lobe continued caudally into a broad rounded process, tooth large and ventrally directed. Postgonite ( Fig. 15 ) curved, apex rounded, apical half of postgonite covered with long pointed scales (i.e. not hairs). The biological species (form), which I identified as P. meijerei ( DUDA ) and P. ronkayi sp. n. are closely related species. I have named the form, which is from a locality closer to the type locality of P. meijerei ( DUDA ) , as meijerei . I have prepared two figures of the male genitalia in order to facilitate further findings of this form. One of the intact males in the Royal Ontario Museum can be designated as the neotype , if the original type specimen is not found in the future (see PAPP 1991a , ROHÁČEK et al . 2001: 205–6 ).