Four new species of Sundarion Kirkaldy, 1904 are described and illustrated: S. compactum Souza & Rothéa sp. nov., S. costaricense Souza & Rothéa sp. nov., S. notabile Souza & Rothéa sp. nov., and S. rubricatum Souza & Rothéa sp. nov. The first two species are from Costa Rica, and two others from Brazil, Mato Grosso.
Membracidae; new species; Sundarion; taxonomy