Prestonia Schaus, 1920

Zhang, Jing, Cong, Qian, Shen, Jinhui, Opler, Paul A. & Grishin, Nick V., 2021, Genomics-guided refinement of butterfly taxonomy, The Taxonomic Report of the International Lepidoptera Survey 9 (3), pp. 1-55 : 6

Prestonia Schaus, 1920 belongs to Euremini Grote, 1898

The monotypic genus Prestonia Schaus, 1920 (type and the only species Prestonia clarki Schaus, 1920 ) has been tentatively placed near Phoebis Hübner, [1819] (type species Phoebis cypris Hübner, [1819] , a junior subjective synonym of Papilio argante Fabricius, 1775 ) due to phenotypic similarity and no DNA sequences available for it. The genomic tree reveals that subfamily Coliadinae Swainson, 1821 splits into two clades that we treat as tribes: Coliadini Swainson, 1821 (includes Phoebis ) and Euremini Grote, 1898 (Fig. 5). Genomic-scale phylogeny confidently places Prestonia as sister to Kricogonia Reakirt, 1863 (type species Colias lyside Godart, 1819 ) and therefore Prestonia belongs to Euremini Grote, 1898 (the clade that does not include Phoebis ) and not to Coliadini.