Cerapachys (Cerapachys) opacus subsp. longicornis Viehmeyer, 1914b: 27 (w.) NEW GUINEA (Papua New Guinea). Australasia.

Primary type information: Primary type material: 2 syntype workers. Primary type locality: Papua New Guinea (“German New Guinea”): (Morobe Prov.), Wareo (no collector’s name). Primary type depository: MNHU (perhaps also SMTD).