Abstract
The first phylogenetic inference of Calopterini and Eurrhacini focused on Calocladon and related taxa was carried out. A data matrix composed of 46 species and 51 morphological characters was assembled and analyzed using parsimony and model-based approaches. Eurrhacini were recovered monophyletic. Furthermore, phylogenetic analyses highly supported the Calocladon clade including also Atlanticolycus, Cladocalon, and Gorhamiumgen. nov. as its sister clade. Our trees consistently recovered monophyly of the new genus with two new species: Gorhamium bidentatumsp. nov. (Panama, Baru Volcano) and G. unidentatumsp. nov. from the Pacific slopes of Ecuador. A revised key to the genera of Eurrhacini is given and illustrations of distinguishing characters are provided. Phylogenetic relationships of Eurrhacini and character evolution are discussed.