TL;DR: The generic placement of species assigned to the dolichoderine ant genus Iridomyrmex Mayr is reviewed, and three new genera are described and several new combinations are created, resulting in numerous new combinations.
Abstract: The generic placement of species assigned to the dolichoderine ant genus Iridomyrmex Mayr is reviewed. Three new genera (Ochetellus, Papyrius, Philidris) are described, one genus (Doleromyrma Forel) is removed from synonymy, and two genera (Anonychomyrma Donisthorpe, Linepithema Mayr) are redefined and expanded, resulting in numerous new combinations. Worker-based characterisations are given for each genus.
TL;DR: Diagnoses, discussion, illustrations, and a character matrix are provided for all five extant genera from the Southwest Indian Ocean region: Aptinoma, Ochetellus, Ravavy, Tapinoma, and Technomyrmex.
Abstract: Keys to the males of the Dolichoderinae ant genera known from the Southwest Indian Ocean islands (Comoros, Madagascar, Mauritius, Mayotte, Reunion, and Seychelles) are provided. Diagnoses, discussion, illustrations, and a character matrix are provided for all five extant genera from the region: Aptinoma, Ochetellus, Ravavy, Tapinoma, and Technomyrmex. A male-based synopsis of the subfamily Dolichoderinae based on the five genera is also given. The previous diagnostic characters for the included genera are reconsidered. Terminologies for male genitalia and wing cells are reviewed.