Ischnomyrmex mexicanum Pergande, 1896: 893 (w.) MEXICO (Nayarit). Neotropic.

Primary type information: Primary type material: lectotype worker (by designation of Mackay & Dash, 2016: 8). Primary type locality: lectotype Mexico: Tepic, x.-xi.1894 (G. Eisen & Vaslit). Primary type depository: CASC. Secondary type information: Secondary type material: 1 paralectotype worker. Secondary type locality: same as for holotype. Secondary type depository: USNM.