We redescribe four species of the genus Tyrophagus Oudemans (Acari: Acaridae): T. longior (Gervais), T. similis Volgin, T. vanheurni Oudemans and T. neiswanderi Johnston and Bruce, collected from the forest soil and tree litter in Hamedan province, Western Iran. We note minor differences between our specimens and other published descriptions of these species.
