In the present study three species of Compsobuthus are described from Khoozestan province in Southwestern Iran :Compsobuthus matthiesseni &Compsobuthus jakesi From Bushehr and Fars provinces in Southern Iran : Compsobuthus matthiesseni , Compsobuthus persicus & Compsobuthus jakesi . The samples collected by UV light during filed studies of RRLS collecting team in these parts of Iran.Morpholog...