Tetranychid mites represent important pests that attack different agricultural crops worldwide. In an evaluation of germplasm of physic nut, Jatropha curcas L. in the state of Sergipe, Brazil, the mites were observed on less vigorous plants with symptoms such as leaf blade reduction and curling. One hundred mites were collected from those plants and observed on microscope for taxonomic identification. The mites were assigned to the species Tetranychus bastosi (Acari: Tetranychidae). This is the first report of physic nut, J. curcas as host plant of T. bastosi in Brazil.Tetranychid mites represent important pests that attack different agricultural crops worldwide. In an evaluation of germplasm of physic nut, Jatropha curcas L. in the state of Sergipe, Brazil, the mites were observed on less vigorous plants with symptoms such as leaf blade reduction and curling. One hundred mites were collected from those plants and observed on microscope for taxonomic identification. The mites were assigned to the species Tetranychus bastosi (Acari: Tetranychidae). This is the first report of physic nut, J. curcas as host plant of T. bastosi in Brazil. Ocorrência de Tetranychus bastosi Tuttle, Baker & Sales (Prostigmata: Tetranychidae)em Jatropha curcas (Linaeus) em Sergipe, BrasilResumoOs ácaros tetraniquídeos representam importantes pragas para diversas culturas agrícolas portodo o mundo. Durante a prospecção de germoplasma de pinhão manso, Jatropha curcas L. noEstado de Sergipe, Brasil. A ocorrência destes foi observada em algumas plantas menos vigorosase que apresentavam sintomas de redução e encarquilhamento do limbo. Foram coletados 100indivíduos destas plantas os quais foram montados em lâminas de microscopia para a identificaçãotaxonômica. Os ácaros foram identificados como pertencentes à espécie Tetranychus bastosi(Acari: Tetranychidae). Este é o primeiro relato em pinhão manso, J. curcas, como hospedeira paraT. bastosi no Brasil.