Cyphomyrmex castagnei MacKay & Baena, 1993: 32, figs. 1, 2, 4-7, 9-12 (w.q.m.) COLOMBIA. Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: Colombia: Nariño, Sanquianga, 2°35’N, 78°21’W, 20 m., 19.i.1990, no.SQ07 (M. Baena). Primary type depository: UVCC. Secondary type information: Secondary type material: 39 paratype workers, 1 paratype queen, 1 paratype male. Secondary type locality: same as for holotype. Secondary type depositories: BMNH, ICAT, ICNB, LACM, MCZC, MIZA, NMNH-NM, UVCC. Type notes: 1) Ulysséa et al., 2025: 12, Table S1, cite 2 paratype workers in NMNH-NM. MZSP never received paratypes of this species. 2) Ulysséa et al., 2025: Table S1, cite 2 paratype workers (owned by LACM) in MZSP.