The genus Serridonus Linnavuori, 1959 is redescribed (type species: Serridonus longistylus Linnavuori, 1959) and three new species added: S. luridus sp.n., S. foersteri sp.n. and S. serratus sp.n., all from Brazil.
Homoptera; Cicadellidae; Deltocephalinae; Serridonus