Abstract
We describe the queen caste of the Arabian endemic species Tapinoma wilsoni Sharaf & Aldawood, 2012 from the type locality (Dhi Ayn ArchaeologicalVillage) located in the south western mountains of the Kingdom of Saudi Arabia. We present the first illustrated key to the Arabian Tapinoma Foerster, 1850 based on the queen castes. Three species are recognised from the Arabian Peninsula, T. melanocephalum (Fabricius, 1793), T. simrothi Krausse, 1911 and T. wilsoni Sharaf & Aldawood, 2012.