New synonyms and new species of European aquatic dance flies (Diptera, Empididae) Author Wagner, Rüdiger 0000-0002-2024-1827 University of Kassel, FB 10, Biology-Zoology, Heinrich-Plett-Strasse 40, D- 34132 Kassel, Germany; Parkstrasse 65, D- 36110 Schlitz, Germany. ruediger 2. wagner @ t-online. de; http: // orcid. org / 0000 - 0002 - 2024 - 1827 ruediger2.wagner@t-online.de Author Plant, Adrian Division of Research Facilitation and Dissemination, Mahasarakham University, Mahasarakham, 44150, Thailand eanddrs @ gmail. com Author Ivković, Marija Department of Biology, Faculty of Science, Rooseveltov trg 6, 10000 Zagreb, Croatia Author Gattolliat, Jean-Luc Musée cantonal de zoologie, Palais de Rumine, Pl. de la Riponne 6, CH- 1014 Lausanne, Switzerland text Zootaxa 2022 2022-12-22 5222 5 427 442 journal article 54545 10.11646/zootaxa.5222.5.2 a9d181e4-bb50-4e52-af39-9ac1f365f826 1175-5326 7471814 21012070-435F-4CB1-AFDD-D911C43AE710 Chelifera subangusta Collin ( Fig. 2 ) Chelifera subangusta Collin, 1961: 708 . Chelifera berdeni Vaillant, 1978: 466 . Nomen nudum . Chelifera giraudae Vaillant, 1982: 374 . Type locality: Marcols ( Ardèche ) [ France ]. Syn. nov . Type material examined. Chelifera giraudae : HOLOTYPE ♁ (slide mounted): Marcols ( Ardèche ) [ France ], prairie 8. V. 1964 [ 800 m ]. Slide no GBIFCH00601688 ( MZLS ). Additional material examined. Germany . 1 ♁, Attmannsweiler (westl. Ellwangen), 16.8.1974 ( ZMFK ); 17 ♁, Annaberger Bach (near Bonn) from emergence collections ( Caspers & Wagner 1982 ) (in coll. RW ) . Remarks. Based on male terminalia, specimens of C. giraudae and C. subangusta are indistinguishable. The holotype of C. giraudae was a specimen reared from a larva collected in the freshwater spring Marcols-lesEaux, Ardèche, Massif Central, 800 m . Vaillant’s holotype slide and the eclosion date and locality fit the original description. The species is rarely collected but its distribution area covers Southwestern and Central Europe. The name C. berdeni was mentioned when RW visited F. Vaillant. At that time he suggested it as a new but undescribed species (F. Vaillant, pers. comm. 1980s)—it is most probably his C. giraudae .