Crematogaster imperfecta Hosoishi, 2015: 82, fig. 32 (w.) BORNEO (East Malaysia: Sabah). Indomalaya.

Primary type information: Type-material: holotype worker. Type-locality: Malaysia: Borneo, Sabah, Sg. Kalang, 800-1000 m., 23.ii.1997 (Sk. Yamane). Type-depository: MBSM. Type-specimen: KUMANT020. Secondary type information: Paratype-material: 5 paratype workers. Paratype-locality: 3 paratype workers with same data as holotype, 2 paratype workers Malaysia: Sarawak, Miri, Lambir Nat. Park, Tower Region, 26.i.1983 (Sk. Yamane). Paratype-depositories: BMNH, CASC, KUEC, SKYC, TNHM.