Temnothorax acuminatus Prebus, 2021b: 47 (in key), 75, figs. 90A, 91 (w.dq.) MEXICO (Chiapas). Neotropic.

Primary type information: Type-material: holotype worker. Type-locality: Mexico: Chiapas: Custepec, 15.72196 N 92.95037 W ± 50 m, 1530 m, 19.v.2008, mesophyll forest, ex bark crevice in treefall, #6281 (J. Longino). Type-depository: CASC. Type-specimen: JTLC000007439. Secondary type information: Paratype-material: 3 paratype workers, 2 dealate queens. Paratype-localities: 1 paratype dealate queen with same data as holotype; 2 paratype workers, 1 paratype dealate queen with same data as holotype, except under epiphytes in treefall, #6286 (J. Longino); 1 paratype worker with same data as holotype, except mesophyll forest, foragers, #6278-s (J. Longino). Paratype-depositories and specimens: CASC: JTLC000007440 (dealate queen); LACM: CASENT0869118 (worker); MCZC: JTLC000007451 (worker), JTLC000007452 (dealate queen); USNM: JTLC000007468 (worker).