Polyrhachis defensus Smith, 1857a: 59 (w.) SINGAPORE, INDONESIA (Java). Indomalaya.

Primary type information: Primary type material: 2 syntype workers. Primary type localities: 1 worker Singapore: (no further data), “SING. 9” (A.R. Wallace), 1 worker Indonesia: Java (no collector’s name). Primary type depository: OXUM. Type notes: The Singapore worker is in OXUM (cited by Donisthorpe, 1932c: 445); the Java worker can not be found in BMNH or OXUM (Bolton (unpublished notes) 1978).