Pheidole guilelmimuelleri heyeri Forel, 1899 an obsolete combination of Pheidole heyeri Forel, 1899
Pheidole guilelmimuelleri var. heyeri Forel, 1899e: 71 (footnote) (s.w.) BRAZIL (Rio Grande do Sul). Neotropic.
Primary type information: Primary type material: lectotype major worker (by designation of Wilson, 2003a: 706). Primary type locality: lectotype Brazil: Rio Grande do Sul, São Leopoldo (Heyer). Primary type depository: MHNG. Secondary type information: Secondary type material: 1 paralectotype minor worker. Secondary type locality: same as for lectotype. Secondary type depository: MHNG.