Sixteen genera are recognized in the Clinocerinae (Diptera: Empididae): Dipsomyia Bezzi, Proagomyia Collin, Asymphyloptera Collin, Proclinopyga Melander, Rhyacodromia Saigusa, Trichoclinocera Collin, Clinocera Meigen, Oreothalia Melander, Roederiodes Coquillett, Clinocerella Engel, new status, Hypenella Collin, Kowarzia Mik, Dolichocephala Macquart, Phaeobalia Mik, Bergenstammia Mik, and Wiedemannia Zetterstedt. The subgenera of Clinocera are no longer recognized and the genus is divided into six tentative informal species groups. The following new generic synonyms are proposed: Hydrodromia Macquart = Clinocera; Archiclinocera Frey and Hypoclinocera Frey = Kowarzia; Lamposoma Becker, Fur Garrett Jones, and Obstinocephala Garrett Jones = Dolichocephala. A key to genera is provided for the identification of adult specimens of Clinocerinae, all genera are described, several lectotypes are designated, and male and female terminalia are illustrated. A world list of species is included for each genus, identifying new combinations. Cladistic relationships of the genera of the Clinocerinae are presented.
Zanclotus Wilder is transferred from the Clinocerinae to the Oreogetoninae. Dryodromia Rondani, also formerly in Clinocerinae, is considered to be most closely related to Hesperempis Melander, both of which are hypothesized to share apomorphies with the Empidinae + Hemerodromiinae. The genera Boreodromia Coquillett, Ceratempis Melander, Ephydrempis Saigusa, Niphogenia Melander, Sabroskyella Wilder, and Trichopeza Rondani also are removed from the Clinocerinae and transferred to the subfamily Trichopezinae, new status. In addition, Apalocnemis Philippi, Gloma Meigen, Hyperperacera Collin (all formerly in Oreogetoninae) and Heleodromia Haliday (formerly in Hemerodromiinae) are transferred to the Trichopezinae. Heterophlebus Philippi (formerly in Oreogetoninae) and Rubistella Garrett Jones (formerly in Brachystomatinae) are removed from synonymy and also transferred to the Trichopezinae. This subfamily is described, and the phylogenetic relationships and.geographic distribution of the included genera are discussed. The Trichopezinae is considered most closely related to the Brachystomatinae (exclusive of Homalocnemis Philippi) and Ceratomerinae. These three subfamilies are hypothesized to represent the sister group to the Microphorinae + Dolichopodidae.