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

Extant: 0 valid subspecies (3 synonyms)