Dysedrognathus extemenus Taylor, 1968e: 133, figs. 3, 4 (w.) SINGAPORE. Indomalaya.

Primary type information: Primary type material: holotype worker. Primary type locality: Singapore: Bukit Timah Nature Reserve, 8.iii.1965, berlesate no. B45, leafmould on granite, degraded coastal hill forest (D.H. Murphy). Primary type depository: ANIC. Secondary type information: Secondary type material: 1 paratype worker. Secondary type locality: same as for holotype. Secondary type depository: MCZC.