Abstract: During entomological surveys conducted by the author in the whole of Balochistan province, Sergentomyia (Sintonius) clydei Sinton (1928) (N=75) and Sergentomyia (Sintonius) tiberiadis pakistanica Artemiev and Safayanova (1974) (N=25) were collected from fifteen and 3 localities respectively. These localities appear to be the new record of this species in the existing literature to date. Sergentomyia tiberiadis pakistanica is being reported first time from Balochistan Province. Morphology of taxonomic characters not reported and measured previously are also described. Measured and illustrated in the present paper. Key for the identification of Pakistani species is also constructed. Comparative analysis of Balochistan specimen with the published data of this species from other territories is also given. Differential diagnosis of this species with its closest allies is also discussed.