Resumo. Spittlebugs (Hemiptera: Cercopidae) are the predominant pasture pests in Brazil, mainly the Amazonia region. Despite frequent reports of attacks by these spittlebugs in Roraima, information on this insect group is scarce. Therefore, we conducted surveys and a population dynamic study in pastures in Roraima from May 2015 to July 2019. We identified the spittlebugs Aeneolamia flavilatera (Urich, 1914) and Aeneolamia reducta montana (Lallemand, 1944). This is the first report of A. reducta montana in Brazil, and the first report of A. flavilatera attacking pastures. We discuss the possible impacts of these pests on Brazilian agriculture and livestock.