Polyrhachis acantha Smith, 1860 junior synonym of current valid taxon Polyrhachis saevissima Smith, 1860
Polyrhachis acantha Smith, 1860b: 98, pl. 1, fig. 16 (w.) INDONESIA (Bacan I.). Australasia.
Primary type information: Primary type material: holotype worker. Primary type locality: Indonesia: Bachian (= Bacan I.), “Bac.” (A.R. Wallace). Primary type depository: OXUM.
Citations

Extant: 0 valid subspecies (1 synonym, 1 homonym, 4 obsolete combinations)