Nomamyrmex crassicornis (Smith, 1855) junior synonym of current valid taxon Nomamyrmex esenbeckii (Westwood, 1842)
Eciton crassicornis Smith, 1855c: 163, pl. 13, figs. 1, 2 (w.) BRAZIL (Amazonas). Neotropic.
Primary type information: Type-material: syntype workers (number not stated). Type-locality: Brazil: Villa Nova (H.W. Bates). Type-depository: BMNH.
Obsolete combinations
Citations

Extant: 0 valid subspecies (3 synonyms)