Pheidole opaca Mayr, 1862 junior synonym of current valid taxon Pheidole vorax (Fabricius, 1804)
Pheidole opaca Mayr, 1862: 749 (s.w.) BRAZIL. Neotropic.
Primary type information: Primary type material: syntype major worker(s), syntype minor worker(s) (numbers not stated). Primary type locality: Brazil: (no further data), “Im Gebiete des Amazonenstromes” (M.C. Vienn). Primary type depository: NHMW.
Citations

Extant: 0 valid subspecies (3 synonyms)