Primary type information:
Primary type material: lectotype major worker (by designation of Eguchi, 2001a: 30). Primary type locality: lectotype Vietnam: Laokay (= Lao Cai), 22.ii.1925 (F. Silvestri). Primary type depository: MCZC.
Secondary type information:
Secondary type material: 1 paralectotype major worker, 8 paralectotype minor workers. Secondary type locality: same as for lectotype. Secondary type depository: MCZC.