Pheidole arciruga r. obnixa Forel, 1912g: 236 (w.) ARGENTINA (Buenos Aires). Neotropic.

Primary type information: Primary type material: lectotype minor worker (by designation of Wilson, 2003a: 138). Primary type locality: lectotype Argentina: Buenos Aires (Richter). Primary type depository: MHNG. Secondary type information: Secondary type locality: same as for lectotype. Secondary type depository: MHNG. Type notes: Original description cites only syntype minor workers (number not stated). Wilson, 2003a: 138, incorrectly nominates a paralectotype major worker that is not from the type series.