Pheidole grex Wilson, 2003a: 430, figs. (s.w.) COLOMBIA. Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Colombia: Cundinamarca, Susumuco, Bogotá-Villavincencio, km. 88, 1100 m. (W.L. & D.E. Brown). Primary type depository: MCZC. Secondary type information: Secondary type material: 1 paratype minor worker. Secondary type locality: same as for holotype. Secondary type depository: MCZC. Type notes: Details of paratype castes and their numbers are not given.