Posteroventral process on 5th tergite, male: A O. sabulosum B Orthoceratium lacustre. Scale bars: 0.5 mm (tergites) and 0.1 mm (processes).

 
 
  Part of: Pollet M, Stark A (2018) The quest for the identity of Orthoceratium lacustre (Scopoli, 1763) reveals centuries of misidentifications (Diptera, Dolichopodidae). ZooKeys 782: 49-79. https://doi.org/10.3897/zookeys.782.26329