Oligomyrmex longiceps Santschi, 1929d: 295, figs. 33, 34 (w.m.) ARGENTINA (Córdoba). Neotropic.

Primary type information: Primary type material: lectotype worker (by designation of Fernández, 2004a: 216). Primary type locality: lectotype Argentina: Córdoba, Sierras de Córdoba, Alta Gracia, La Granja, 1924 (C. Bruch). Primary type depository: MZSP. Primary type specimen: MZSP0079088. Secondary type information: Secondary type material: 1 paralectotype male. Secondary type locality: same as for lectotype. Secondary type depositories: MZSP (probably other original syntypes in NHMB). Secondary type specimen: MZSP0079088 (genitalia of the male: MZSP0079090). Type notes: 1) Original description gives no indication of numbers of specimens. 2) Ulysséa et al., 2025: Table S1, cite lectotype worker, 1 paralectotype male in MZSP, both with specimen code MZSP0079088.