Resumo. Aethalion reticulatum (Linnaeus, 1767) (Hemiptera: Aethalionidae) is a species of phytophagous and polyphagous Hemiptera that has a wide geographic distribution. This species frequently associates in mutualistic interactions with ants and stingless bees. Thus, for the first time, the infestation of A. reticulatum in Cinnamomum verum J.Presl is reported and associations of this leafhopper with bees of the genus Trigona are recorded in Minas Gerais, Brazil.