Mayfly types and additional material (Insecta: Ephemeroptera) examined by F. - J. Pictet and A. - E. Pictet, housed in the Museums of Natural History of Geneva and Vienna Author Sartori, Michel Musée cantonal de zoologie, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Suisse. & Département d’Ecologie et d’Evolution, Biophore, Université de Lausanne, CH- 1015 Lausanne, Suisse. Author Bauernfeind, Ernst Naturhistorisches Museum Wien, Burgring 7, A- 1010 Wien, Österreich. E-mail: ernst. bauernfeind @ nhm-wien. ac. at * Corresponding author: michel. sartori @ vd. ch ernst.bauernfeind@nhm-wien.ac.at text Revue suisse de Zoologie 2020 127 2 315 339 journal article 119274 10.35929/RSZ.0022 8839740a-00d8-44ff-b6cf-5cee99c19643 0035-418 5743794 Ephemera glaucops F.-J. Pictet, 1843 Fig. 2 Ephemera glaucops F.-J. Pictet, 1843 -1845: 132-134 , pl. 8, figs 1-3. Accepted name: Ephemera glaucops F.-J. Pictet, 1843 . Locus typicus: “… Genève au bord du lac…”. Type material: MHNG ; syntype , ♂ imago; 620 Genthod 48 Genève , coll. Pictet / Gthod , 27.7 [written by F.-J. Pictet, probably giving the place (Genthod) and the date ( July 27 ) of collecting] . – MHNG ; syntype , ♂ imago bearing 4 labels ( Fig. 2 ): 620 Genthod 48 Genève , coll. Pictet / Eph[emera] glaucops ♂ imago [F.-J. Pictet’s handwriting] / Gthd 21.7 [Pictet’s handwriting]/ Ephemera glaucops Pictet 1843 M. Sartori det. 1996. – MHNG ; syntype , ♀ imago; 620 Genthod 48 Genève , coll. Pictet / G[en]thod, 27.7 [F.-J. Pictet’s handwriting]. – MHNG ; syntype , ♀ imago; 620 Genthod 48 Genève , coll. Pictet / G[en]thod, 21.7 [F.-J. Pictet’s handwriting]. Fig. 2. Ephemera glaucops F.-J. Pictet, 1843 , labels of one male imago syntype. Remarks: This is the best series at the MHNG. Besides numerous subsequent misidentifications, there are 4 specimens that still bear a label handwritten by F.-J. Pictet and that were collected at Genthod, near Geneva . Only these 4 specimens can be considered syntypes of E. glaucops .