A new species of the flat mite genus Phyllotetranychus Sayed, 1938 (Acari: Trombidiformes: Tenuipalpidae), P. hadii sp. nov., is described based on the female, male and larval stages, collected from Washingtonia filifera (Arecaceae) in Iran.
Keywords: Acari, Trombidiformes, Prostigmata, Tenuipalpidae, flat mite, Iran.