Primary type information:
Primary type material: holotype worker. Primary type locality: Malaysia: N Kiduk Arok, Trus Madi Massif, 1500 m., ix.1956, no. 21, Cambridge N Borneo Exped. (P.W. Bryant). Primary type depository: MCZC.
Secondary type information:
Secondary type material: 5 paratype workers. Secondary type locality: same data as holotype but no. 34A. Secondary type depositories: BMNH, MCZC.