An update to the taxonomy and distribution of the Arabian Foerster, 1850 (Hymenoptera: Formicidae) with an illustrated key and remarks on habitats.

Background: Foerster belongs to the ant subfamily Dolichoderinae and the vast majority of its species are arboreal or generalised foragers. The genus is composed of 70 described species, 22 known subspecies and six valid fossil species worldwide, while from the Arabian Peninsula, three species have been recorded so far.

New Information: Ants of the genus of the Arabian Peninsula are reviewed, keyed and illustrated, based on the worker caste.