Seifert, B. and Schultz, R. (2021) “A taxonomic revision of the Palaearctic ant subgenus Coptoformica Müller, 1923 (Hymenoptera, Formicidae): With 40 figures and 7 tables and an electronic supplementary information SI1, SI2, SI3”, Contributions to Entomology = Beiträge zur Entomologie, 71(2), pp. 177–220. doi:10.21248/contrib.entomol.71.2.177-220.