Ectosemia eurythmia (Stichel, 1915), 2023

Zhang, Jing, Cong, Qian, Shen, Jinhui, Song, Leina & Grishin, Nick V., 2023, Genomic analysis reveals new species and subspecies of butterflies, The Taxonomic Report of the International Lepidoptera Survey 11 (6), pp. 1-63 : 16

Mesosemia nesti Hewitson, 1858 , Mesosemia acuta Hewitson, 1873 , and Mesosemia eurythmia Stichel, 1915 belong to the genus Ectosemia Grishin, 2021

Genomic sequencing of Mesosemia nesti Hewitson, 1858 ( type locality in French Guiana)—the species transferred to Semomesia Westwood, 1851 ( type species Papilio croesus Fabricius, 1777 ) in Callaghan and Lamas (2004) —and Mesosemia acuta Hewitson, 1873 ( type locality in Brazil, possibly Rio de Janeiro) reveals that they are not monophyletic with Mesosemia Hübner, 1819 ( type species Mesosemia philoclessa Hübner, 1819 ) that includes Semomesia as its junior subjective synonym, but instead originate within the genus Ectosemia Grishin, 2021 ( type species Papilio eumene Cramer, 1776 ) ( Fig. 15). Therefore, we propose the following new combinations: Ectosemia nesti (Hewitson, 1858) and ( type locality in Brazil: Amazonas), we tentatively place it in Ectosemia due to wing pattern similarities: Ectosemia eurythmia (Stichel, 1915) , comb. nov.