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Abstract
All the 13 nominal taxa of the subgenus Polyrhachis are included in this revision. Range, mean, standard deviation, coefficient of variability, coefficient of difference, and the taxonomic distance for 10 morphological measurements and indices are calculated for comparison of different samples. Seven of the eight infraspecific taxa are synonymized, and the other, mindanaensis, is raised to specific status. Montana from Borneo is described as a new species. A tentative phyletic scheme within this subgenus is proposed.