Temnothorax acutispinosus Prebus, 2021b: 51 (in key), 85, fig. 93 (w.) MEXICO (Chiapas). Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: Mexico: Chiapas: Custepec, 15.72196 N 92.95037 W ± 50 m, 1530 m, 19.v.2008, mesophyll forest, under epiphytes in treefall, #6285 (J. Longino). Primary type depository: CASC. Primary type specimen: JTLC000007447. Secondary type information: Secondary type material: 12 paratype workers. Secondary type locality: 11 paratype workers with same data as holotype; 1 paratype worker with same data as holotype except #6286. Secondary type depositories and specimens: AMNH: CASENT0869154; CASC: CASENT0869155; ECOSCE: JTLC000007450; FSCA: CASENT0869152; LACM: CASENT0869149, CASENT0869156; MCZC: JTLC000007448; UCDC: CASENT0869151; UNAM: CASENT0869119, CASENT0869150; USNM: JTLC000007449; UVGC: CASENT0869153.