Pheidole arctos Wilson, 2003a: 623, figs. (s.w.) MEXICO (Tamaulipas). Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Mexico: Tamaulipas, Gomez Fariás, 400-600 m., 1964, Cornell University Mexico Field Party. 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.