Abstract
This paper describes two new species of predatory mites belonging to the genus Paragigagnathus Amitai & Grinberg (Acari: Mesostigmata: Phytoseiisae), namely Paragigagnathus neodesertorum sp. nov. from Acacia raddiana L. (Fabaceae), and, P. jazanensis sp. nov. from Tamarix sp. (Tamaricaceae). Also, P. amantis (Chaudhri, Akbar & Rasool, 1979) is a new species record for Saudi Arabia, reported from Tamarix sp.