Pheidole tarchon Wilson, 2003a: 517, figs. (s.w.) ARGENTINA (Tucumán). Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Argentina: Tucumán, 3 km. NE Tafi del Valle, ca 2200 m. (W.L. 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.