New species of Nanexila Winterton & Irwin and Taenogera Kröber from Australia (Diptera: Therevidae) Author Winterton, Shaun L. text Zootaxa 2007 1413 55 64 journal article 10.5281/zenodo.175680 a2d74904-b865-48fc-99e0-71135dc8b9c4 1175-5326 175680 To identify N. gracilis and N. atricauda sp. nov. 1a. Large, slender body (total length: ca. 10–13 mm ); bright orange colouration......................................... 1b. - Size small to large (total length: ca. 4–9 mm ; rarely larger), slender to more robust; body colouration vari- able, never bright orange ...........................................................................................................................1c. 1b. Scutum and scutellum with board, grey, pubescent stripe; female abdomen uniform orange colour ........... ............................................................................................................................................ gracilis ( Mann ) . - Scutum and scutellum without grey pubescent strip; female abdomen orange with segments 7–8 and ter- minalia black ..................................................................................................................... atricauda sp. nov. 1c. Epandrium without enlarged setae (e.g. Winterton et al. 1999a : fig. 30); female abdominal tergite 2 with- out patch of modified setae......................................................................................................................... 2. - Epandrium with enlarged setae laterally or posterolaterally (e.g. Winterton et al. 1999a : figs 101, 119, 147); female abdominal tergite 2 usually with patch of modified setae posteromedially ( Winterton et al. 1999a : fig. 17c, d) ................................................................................................... palassa species-group 3.