Abstract
The "sphecid' fauna of Saudi Arabia (Hymenoptera: Apoidea) is listed. A total of 207 species in 42 genera are recorded including previous and new species records. Most Saudi Arabian species recorded up to now are more or less common and widespread mainly in the Afrotropical and Palaearctic zoogeographical zones, the exception being Bembix buettikeri Guichard, Benibix hofufensis Guichard, Beinbix saudi Guichard, Cerceris cons tricta Guichard, Oxybelus lanceolatus Gerstaecker, Palarus arabicus Pulawski in Pulawski & Prentice, Tachytes arabicus Guichard and Tachytes fidelis Pulawski, which are presumed endemic to Saudi Arabia (3.9% of the total number of species). General distribution and ecozones, and Saudi Arabian localities are given for each species. In this study two genera (Diodontus Curtis and Dryudella Spinola) and 11 species are newly recorded from Saudi Arabia.