Pheidole ambigua Wilson, 2003a: 652, figs. (s.w.) BRAZIL (São Paulo). Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Brazil: São Paulo, Caraguatatuba Reserve Florestal (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.