Atta sexdens subsp. robusta Borgmeier, 1939: 426, fig. 15 (w.q.m.) BRAZIL (Rio de Janeiro). Neotropic.

Primary type information: Primary type material: syntype workers (number not stated, “numerous”), 3 syntype queens, 2 syntype males. Primary type localities: Brazil: Rio de Janeiro, São Bento, 15.x.1935 (M. Torres), Rio de Janeiro, Cordovil, i.1921 (O. Gomes), Rio de Janeiro, 28.ix.1927 (L.A. de Azevido Marques), Rio de Janeiro, Quinta Boa Vista, xi.1922 (Monteiro), Rio de Janeiro, Quissamã (R. Saupp). Primary type depositories: DSVB, FRRJ, MZSP. Primary type specimens: MZSP0084460, MZSP0084461, MZSP0084462. Type notes: Ulysséa et al., 2025: Table S1, cite 1 syntype minor worker, 1 syntype major worker, 1 syntype queen, 2 syntype males in MZSP.