| abstract | Three species of tetranychoid mites living on imported plants were recently intercepted at the plant quarantine of Narita Airport. They were identified as follows: Oigonychus obliquus sp.nov., off squash from Mexico; Tetranychus malaysiensis Ehara, off okra from Thailand; Tenuipalpus caudatus (Dugès), off Viburnum from Italy. A description of O. obliquus sp.nov. and redescriptions of the other species are given. T. malaysiensis is recorded from Thailand for the first time. |