Brachymyrmex sosai Ortiz-Sepúlveda et al., 2019: 529, figs. 51, S38 (w.q.l.) PERU. Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: Peru: Cusco, Paucartambo, Kcosñipata, Predio Los Wayqeches, ACCA, -13.17956, -71.60556, 2825 m., JCS040920-04 (J. Sosa-Calvo). Primary type depository: MUSM. Primary type specimen: USNMENT00757760. Secondary type information: Secondary type material: 27 paratype workers, 1 paratype queen. Secondary type locality: same as for holotype. Secondary type depositories: MUSM, USNM. Secondary type specimen: USNMENT00759061, USNMENT00759062, USNMENT01128655, USNMENT01128760, USNMENT00526429, USNMENT01414589, USNMENT01128762. Type notes: Some paratypes apparently preserved in ethanol.