Apterostigma trapeziforme Lattke, 1997: 174, figs. 179, 180 (w.) EL SALVADOR. Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: El Salvador: Quetzaltepec, 4.vii.1961 (M.E. Irwin). Primary type depository: LACM. Secondary type information: Secondary type material: 1 paratype worker. Secondary type locality: same as for holotype. Secondary type depository: LACM.