Abstract: During the revision of the genera of Phlebotomine sandflies collected by the author from the whole of the Balochistan Province during 1996-2001, a comparative external and anatomical analysis of forty-five key parameters were conducted for the species of the subgenus Phlebotomus and the same are presented here. Differential diagnosis of the member species of this subgenus is discussed. The results are compared with those reported in the literature to date