Pseudolasius undecemus Donisthorpe, 1949c: 756 (w.) NEW GUINEA (Indonesia, Papua New Guinea). Australasia.

Primary type information: Primary type material: 5 syntype workers. Primary type localities: 1 worker Indonesia: Irian Jaya (“Dutch New Guinea”): Maffin Bay, 10.vi.1944 (E.S. Ross), 4 workers Papua New Guinea (“New Guinea”): Finschhafen, 27.iv.1944 (E.S. Ross). Primary type depositories: BMNH, CASC.