Ruppeliana Young (Insecta: Hemiptera: Cicadellidae): three new species, redescriptions, and key to males

The Neotropical genus Ruppeliana Young, 1977 comprises 13 species. The following three are redescribed and illustrated herein: R. coronata (Signoret, 1853), R. fulva (Taschenberg, 1884), and R. nigripes (Signoret, 1853). Additionally, three new species are described and illustrated: R. delicata sp. nov., R. robusta sp. nov., and R. tridentata sp. nov., from the states of Paraná, Santa Catarina, and Rio de Janeiro, respectively. A revised diagnosis, a key to males, a distribution map, and a neotype designation for R. grossii Cavichioli et al., 2017 are also proposed.