Diacamma bispinosum subsulcata Emery, 1897 junior synonym of current valid taxon Diacamma bispinosum (Le Guillou, 1842)
Diacamma bispinosum var. subsulcata Emery, 1897h: 152 (in text) (w.) INDONESIA (Halmahera). Australasia.
Primary type information: Primary type material: 2 syntype workers. Primary type locality: Indonesia: Halmahera (W. Doherty). Primary type depository: MSNG.
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