Pheidole gradifer Wilson, 2003a: 613, figs. (s.w.) COSTA RICA. Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Costa Rica: Santa Rosa Nat. Park, 280 m. (D. Olson). 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.