Diacamma bispinosum saussurei Forel, 1922 junior synonym of current valid taxon Diacamma rugosum (Le Guillou, 1842)
Diacamma bispinosum var. saussurei Forel, 1922b: 89 (w.) INDONESIA (Halmahera I.). Australasia.
Primary type information: Type-material: syntype workers (number not stated). Type-locality: Indonesia: Halmahera (H. de Saussure). Type-depository: MHNG.
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