Abstract
Lafontaineana Martinez, gen. nov. is proposed as a new Neotropical genus of Pantheinae, forming a sister group to Gaujonia Dognin, 1891 based on a phylogenetic analysis. In addition, one new combination and four new species are proposed: Lafontaineana marmorifera (Walker, 1865), comb. nov. (Colombia), Lafontaineana alexandrae Martinez, sp. nov. (Ecuador), Lafontaineana imama Martinez, sp. nov. (Colombia), Lafontaineana puma Martinez, sp. nov. (Ecuador), and Lafontaineana thuta Martinez, sp. nov. (Ecuador). Two new Neotropical species of Panthea are described, Panthea hondurensis Martinez, sp. nov. and Panthea taina Martinez, sp. nov.