A species of eriophyid mite, pink citrus rust mite, Aculops pelekassi (Keifer), recorded as new to Taiwan, is redescribed and photographed by scanning electron microscope (SEM), relying on female specimens collected on lemon trees, Citrus limonia Osbeck (Rutaceae) from Zehnshan, Yuanshan, Ilan Co.; Hsitzu, Taipei Co. and the NCHU Campus, Taichung City, Taiwan, R.O.C.