Polyrhachis ithonus Smith, 1860b: 99, pl. 1, fig. 18 (w.q.) INDONESIA (Bacan). Australasia.

Primary type information: Primary type material: 1 syntype worker, 1 syntype queen. Primary type locality: Indonesia: Bachian (= Bacan I.), “Bac.” (A.R. Wallace). Primary type depository: OXUM. Type notes: 1) Donisthorpe, 1932c: 460, cites 1 queen in OXUM. 2) Bolton (unpublished notes) 1978, cites 1 worker, 1 queen syntypes in OXUM.

Infrasubspecies

• P. r. i. silvatica Santschi, 1932