Descri？？o de três novas espécies de Rotigonalia Young (Hemiptera: Auchenorrhyncha: Cicadellidae) com chave para as espécies

three new species of rotigonalia young are described: r. larissae sp.n., r. olivacea sp.n. and r. curvula sp.n. they were collected in vilhena (rond？nia state), cárceres (mato grosso state) and jacareacanga (pará state), respectively. these new species are similar to r. concedula (melichar, 1926), differing in the form of the aedeagus and paraphyses. these four species present the base of clypeus swollen, forming two great lateral lobes. a new key to the species is presented.