The members of Genus Bemisia Quaintance & Baker (Hemiptera: Aleyrodidae) is the most important pests in different parts of the world . It comprises in egypt by three species. These are Bemisia afer (Priesner & Hosny), Bemisia formosana Takahashi and Bemisia tabaci (Gennadius) ( Biotypes B &Q). The results of the present work indicated that B.afer distributed in 21 governorates , B. formosana in 3 governorates and B. tabaci in 27 governorates. Diagnosis , maps and key of Bemisia spp. as well as updating list of whiteflies in Egypt also provided.