Pheidole mackayi Wilson, 2003a: 448, figs. (s.w.) MEXICO (Chiapas). Neotropic.

Primary type information: Primary type material: holotype major worker. Primary type locality: Mexico: Chiapas, 24 km. S Cintalapa (= Cintalpa), 710 m., 2.vi.1988, #107171 (W.P. Mackay). 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: 1) Details of paratype castes and their numbers are not given. 2) Longino, 2009: 52 points out that the minor worker described in the original description is a misidentified Pheidole janzeni.