Leptothorax (Macromischa) leucacanthus Baroni Urbani, 1978b: 460, figs. 61, 103 (w.aq.) MEXICO (Guerrero). Neotropic.

Primary type information: Type-material: holotype worker. Type-locality: Mexico: Guerrero: [locality unknown], [collection date unknown], M.C.Z. Holotype 32434 (W.V. Hagen). Type-depository: MCZC. Type-specimen: MCZENT00032434. (Source: Prebus, 2021b: 136.) Secondary type information: Paratype-material: 2 paratype workers, 1 paratype alate queen. Paratype-locality: same as for holotype. Paratype-depositories and specimens: MCZC: MCZENT00577108 (worker), MCZENT577109 (queen); NHMB: CASENT0912957 (worker). (Source: Prebus, 2021b: 136.)