Forel, 1893b: 165 (synoptic classification); Emery, 1895l: 772 (synoptic classification); Forel, 1917: 249 (synoptic classification); Wheeler, 1922: 698 (genera key); Emery, 1925d: 240 (diagnosis, genera key, catalogue); Wheeler & Wheeler, 1970b: 652 (larva diagnosis); Wheeler & Wheeler, 1976b: 62 (larvae, review and synthesis); Dlussky & Fedoseeva, 1988: 77 (synoptic classification); Hölldobler & Wilson, 1990: 18 (synoptic classification); Agosti, 1990a: 295 (review of tribe, diagnosis); Agosti, 1991: 295 (Formica genus group diagnosis); Agosti, 1994b: 95 (diagnosis, revision of genera, phylogeny, key); Bolton, 1994: 50 (synoptic classification); Bolton, 1995a: 1039 (census); Bolton, 1995b: 12 (catalogue); Bolton, 2003: 27, 126 (diagnosis, synopsis); Dlussky, 2008a: 57 (Europe Eocene amber species key); Ward et al., 2016: 346 (synopsis).