Cavichiassus, a new genus of Hyalojassini (Hemiptera: Cicadellidae) from Brazil, and first description of the genitalia of Neotrocnada rutasaca (Blocker) comb. nov.

The new iassine leafhopper genus Cavichiassus gen. nov. is described based on Cavichiassus punctatus gen. et sp. nov from Southern of Brazil, and can be recognized by the forewing with appendix and first apical cell narrow, more membranous than adjacent cells; the vein separating appendix and first apical cell complete; the protibia with dorsal surface flat and the AD and PD margins carinate, but weakly expanded laterally; the ventral processes of pygofer conspicuous, extending ventrad; the subgenital plate small, simple, without pseudostyles or setae; the connective amorphous; the style with apodeme and apophysis very long; and the aedeagus with dorsal apodeme bearing a pair of processes directed posterad. A new combination is proposed and the male and female genitalia of Neotrocnada rutasaca (Blocker, 1979) comb. nov. are described and illustrated for the first time. Additionally, the host plant is identified for N. rutasaca comb. nov. and a new country record is given for Neotrocnada napoensis Krishnankutty Dietrich, 2012.