Formica aliena Foerster, 1850a: 36 (w.m.) GERMANY. Palearctic.

Primary type information: Type-material: neotype worker. Type-locality: Germany: Eifel, 37 km SE Aachen, 7.ix.1991 (Schleiden). Type-depositories: SMNG, BMNH (not specified where the neotype is deposited). (Source: Seifert, 2020a: 61.) Secondary type information: Paratype-material: 10 paraneotype workers. Paratype-locality: same as for neotype. (Source: Seifert, 2020a: 61.)