Kessleria male genitalia. 12 K. alternans, Switzerland, Graubünden, SE Sils-Maria, 1820–1870 m, 13.7.1989, leg. Huemer, Karsholt & Tarmann, gen. slide YPO 22 (TLMF) 13 idem, distal part of phallus enlarged 14 K. cottiensis sp. n., paratype, Italy, Prov. Torino, Alpi Cozie, V. delle Finestre, 1700 m, 27.7.1990, leg. Huemer & Tarmann, gen. slide YPO 66 (TLMF) 15 idem, distal part of phallus enlarged 16 K. dimorpha sp. n., paratype, France, Dep. Hautes-Alpes, Col Agnel, 2770 m, 4.8.2010, leg. Huemer gen. slide YPO 149 (TLMF) 17 idem, holotype, gen. slide YPO 158, distal part of phallus enlarged.

 
 
  Part of: Huemer P, Mutanen M (2015) Alpha taxonomy of the genus Kessleria Nowicki, 1864, revisited in light of DNA-barcoding (Lepidoptera, Yponomeutidae). ZooKeys 503: 89-133. https://doi.org/10.3897/zookeys.503.9590