The diverse, largely Neotropical subtribe Euptychiina (Satyrinae, Nymphalidae) is widely regarded as one of the most taxonomically challenging groups among all butterflies. Over the last two decades, morphological and molecular studies have revealed widespread paraphyly and polyphyly among genera, and a comprehensive, robust phylogenetic hypothesis is needed to build a firm generic classification to support ongoing taxonomic revisions at the species level. Here, we generated a dataset which includes sequences for up to nine nuclear genes and the mitochondrial COI 'barcode' for a total of 1280 specimens representing 449 described and undescribed species of Euptychiina and 39 outgroups, resulting in the most complete phylogeny for the subtribe to date. In combination with a recently developed genomic backbone tree this dataset resulted in a topology with strong support for most branches.

The diverse, largely Neotropical subtribe Euptychiina (Satyrinae, Nymphalidae) is widely regarded as one of the most taxonomically challenging groups among all butterflies. Over the last two decades, morphological and molecular studies have revealed widespread paraphyly and polyphyly among genera, and a comprehensive, robust phylogenetic hypothesis is needed to build a firm generic classification to support ongoing taxonomic revisions at the species level. Here, we generated a dataset which includes sequences for up to nine nuclear genes and the mitochondrial COI 'barcode' for a total of 1280 specimens representing 449 described and undescribed species of Euptychiina and 39 outgroups, resulting in the most complete phylogeny for the subtribe to date. In combination with a recently developed genomic backbone tree this dataset resulted in a topology with strong support for most branches.