Monomorium (Holcomyrmex) armstrongi McAreavey, 1949: 10, figs. 30-35 (s.w.q.m.) AUSTRALIA (New South Wales). Australasia.

Primary type information: Primary type material: holotype worker. Primary type locality: Australia: New South Wales, Nyngan (J.W.T. Armstrong). Primary type depository: ANIC. Secondary type information: Secondary type material: paratype workers, paratype queens, paratype males (numbers not stated, “large complete series of all forms”). Secondary type locality: same as for holotype. Secondary type depositories: ANIC, MVMA. Type notes: Heterick, 2001: 378, adds that the labels have ‘Bogan River’.