Primary type information:
Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2008: 3). Type-locality: lectotype Cambodia: Pursat, W bank of Grande Lac, 10.iii.1930, no. 5778 (K. Davydov). Type-depository: SIZK.
Secondary type information:
Paratype-material: 2 paralectotype workers. Paratype-locality: same as for lectotype. Paratype-depository: SIZK.