Stabilisation of some names of European butterflies (Lepidoptera: Pieridae) in their prevailing usage Author Balletto, Emilio Department of Life Sciences and Systems Biology, University of Turin, Italy. & emilio. balletto @ unito. it; https: // orcid. org / 0000 - 0003 - 1168 - 2791 Author Barbero, Francesca Department of Life Sciences and Systems Biology, University of Turin, Italy. & francesca. barbero @ unito. it; http: // orcid. org / 0000 - 0003 - 2667 - 0435 Author Bonelli, Simona Department of Life Sciences and Systems Biology, University of Turin, Italy. & simona. bonelli @ unito. it; http: // orcid. org / 0000 - 0001 - 5185 - 8136 Author Casacci, Luca P. Department of Life Sciences and Systems Biology, University of Turin, Italy. & Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland. Author Dapporto, Leonardo ZEN lab, Department of Biology, University of Florence, Italy. text Zootaxa 2020 2020-05-25 4780 2 387 395 journal article 21881 10.11646/zootaxa.4780.2.11 15a17e6a-ec5e-48d6-8fe1-7e1d19d07f94 1175-5326 3842456 9FCA4ABE-0840-424D-A25A-01DAE715137C Genus Euchloe Hübner, [1819] Three, basically parapatric, species of ‘dappled whites’ (genus Euchloe ) are unanimously recognised to occur in Europe, viz. 1) the eastern dappled white, 2) the mountain dappled white, and 3) the western dappled white. By common consensus, the names [ Papilio ] ausonia (Hübner, [1804]) , Pontia simplonia Freyer, 1829 and Euchloe crameri Butler, 1869 , in the same order, have slowly become fixed to identify them ( Bernardi 1945 , 1947 , Tolman & Lewington 1997 , Tshikolovets 2011 , Wiemers et al. 2018 , etc.). Each of these names is riddled with interpretational and nomenclatural problems principally deriving from mismatches between characters shown by the illustrated type materials and their stated type localities. As required by Art. 75.3.1 ( ICZN 1999 and later updates), these problems will be resolved by designating two lectotypes and two neotypes .