An eriophyoid species from Iran is described and illustrated. It is Acerimina bajgahi sp. nov. that has been found on hybrid of a Rosa species (Rosaceae) from south of Iran, Shiraz. This species is new to science and the genus is new record for Iranian mite fauna. It causes witches' broom of terminal twigs of the host plant. A key to the species of Acerimina of the world is provided. A key to world species of Acerimina is provided.