Khachonpisitsak, S.; Yamane, S.; Sriwichai, P.; Jaitrong, W. 2020. An updated checklist of the ants of Thailand (Hymenoptera, Formicidae). ZooKeys 998:1-182. 10.3897/zookeys.998.54902 PDF

Alpatov, V. V.; Arnol'di, K. V. 1928. Family Formicidae. Pp. 711-727 in: Filipiev, I. N. (ed.) 1928. Key for insects [Opredelitel' nasekomykh] [in Russian]. Moscow: Novaya Derevnya Publishing House, 940 pp.

Zhong, Y. 2021. Taxonomy of the ant genus Pheidole Westwood (Hymenoptera: Formicidae) from Fujian, China with description of a new species. Entomotaxonomia 43 (4):5 pp. 10.11680/entomotax.2021035 PDF

Griebenow, Z. 2021. Synonymisation of the male-based ant genus Phaulomyrma (Hymenoptera: Formicidae) with Leptanilla based upon Bayesian total-evidence phylogenetic inference. Invertebrate Systematics 35:603–636. 10.1071/IS20059 PDF

Godfrey, R. K.; Oberski, J. T.; Allmark, T.; Givens, C.; Hernandez-Rivera, J.; Gronenberg, W. 2021. Olfactory system morphology suggests colony size drives trait evolution in odorous ants (Formicidae: Dolichoderinae). Frontiers in Ecology and Evolution 9:733023. 10.3389/fevo.2021.733023 PDF

Notes: Species of Dorymyrmex and Forelius studied

Booher, D. B. 2021. The ant genus Strumigenys Smith, 1860 (Hymenoptera: Formicidae) in western North America north of Mexico. Zootaxa 5061 (2):201-248. 10.11646/zootaxa.5061.2.1 PDF

Ito, F.; Hashim, R.; Mizuno, R.; Billen, J. 2022. Notes on the biology of Protanilla sp. (Hymenoptera, Formicidae) collected in Ulu Gombak, Peninsular Malaysia. Insectes Sociaux 69:13-18. 10.1007/s00040-021-00839-z PDF

Notes: Published "online early" 27 Oct 2021, without volume number or final pagination.

Wetterer, J. K. 2021. Ants (Hymenoptera, Formicidae) of Saint Vincent, West Indies. Sociobiology 68 (2):5pp. e6725. 10.13102/sociobiology.v68i2.6725 PDF

Ulysséa, M. A. 2021. [Untitled. New species of Hylomyrma attributed to M.A. Ulysséa.]. Pp. 19-21, 37-39, 52-58, 63-83, 86-88, 94-96, 123-135 in: Ulysséa, M. A.; Brandão, C. R. F. 2021. Taxonomic revision of the Neotropical ant genus Hylomyrma Forel, 1912 (Hymenoptera: Formicidae: Myrmicinae), with the description of fourteen new species. Zootaxa 5055 (1):1-137. PDF

Ulysséa, M. A.; Brandão, C. R. F. 2021. Taxonomic revision of the Neotropical ant genus Hylomyrma Forel, 1912 (Hymenoptera: Formicidae: Myrmicinae), with the description of fourteen new species. Zootaxa 5055 (1):1-137. 10.11646/zootaxa.5055.1.1 PDF

Borowiec, L.; Salata, S. 2021. Notes on ants (Hymenoptera: Formicidae) from Western Greece. Annals of the Upper Silesian Museum, Entomology 005:1-23. 10.5281/zenodo.5571258 PDF

Borowiec, L.; Wieczorek, K.; Salata, S. 2021. Review of ants (Hymenoptera: Formicidae) of the Dodecanese Archipelago, Greece. Annals of the Upper Silesian Museum (Entomology) 006:1-33. 10.5281/zenodo.5571270 PDF

Zhuang, Y.; Ran, H.; Li, X.; Feng, C.; Liu, Y. 2022. A new species of the iron maiden ant based on an alate female from mid-Cretaceous Burmese amber (Hymenoptera: Formicidae: †Zigrasimecia). Cretaceous Research 130:105056 (5 pp.). 10.1016/j.cretres.2021.105056 PDF

Adams, R. M. M.; Larsen, R. S.; Stylianidi, N.; Cheung, D.; Qiu, B.; Murray, S. K.; Zhang, G.; Boomsma, J. J. 2021. Hairs distinguish castes and sexes: identifying the early ontogenetic building blocks of a fungus-farming superorganism (Hymenoptera: Formicidae). Myrmecological News 31:201-216. 10.25849/myrmecol.news_031:201 PDF

Pettit, M. J.; Andersen, A. N. 2021. A new species of Epopostruma (Hymenoptera: Formicidae) from monsoonal Australia. Zootaxa 5048 (1):141-144. 10.11646/zootaxa.5048.1.9 PDF

Igodawa, N.; Dobata, S. 2018. Colony structure and life history of Lioponera daikoku (Formicidae: Dorylinae). Asian Myrmecology 10:10 pp. e010006. 10.20362/am.010006 PDF

Borowiec, M. L.; Cover, S. P.; Rabeling, C. 2021. The evolution of social parasitism in Formica ants revealed by a global phylogeny. Proceedings of the National Academy of Sciences of the United States of America 118 (38):10 pp. e2026029118. 10.1073/pnas.2026029118 PDF

Oliveira, A. M.; Powell, S.; Feitosa, R. M. 2021. A taxonomic study of the Brazilian turtle ants (Formicidae: Myrmicinae: Cephalotes). Revista Brasileira de Entomologia 65 (3):52 pp. e20210028. [online early] 10.1590/1806-9665-RBENT-2021-0028 PDF

Boudinot, B. E.; Moosdorf, O. T. D.; Beutel, R. G.; Richter, A. 2021. Anatomy and evolution of the head of Dorylus helvolus (Formicidae: Dorylinae): Patterns of sex- and caste-limited traits in the sausagefly and the driver ant. Journal of Morphology 282:1616-1658. 10.1002/jmor.21410 PDF

Johnson, R. A. 2021. A taxonomic revision of South American species of the seed-harvester ant genus Pogonomyrmex (Hymenoptera: Formicidae). Part II. Zootaxa 5033 (1):1-230. 10.11646/zootaxa.5033.1.1 PDF

Arnol'di, K. V. 1976. [Untitled. New species attributed to K. V. Arnol'di.]. Pp. 88, 103-105 in: Tarbinsky, Y. S. 1976. The ants of Kirghizia. [In Russian.]. Frunze: Ilim, 217 pp. PDF

Consani, M. 1952. [Untitled. New species attributed to M. Consani.]. Pp. 41-42 in: Consani, M.; Zangheri, P. 1952. Fauna di Romagna. Imenotteri - Formicidi. Memorie della Società Entomologica Italiana 31:38-48. PDF

Lewis, J.; Sands, D. 2021. Anonychomyrma inclinata sp. nov. (Hymenoptera: Formicidae): description, biology and interaction with the endangered bulloak jewel butterfly, Hypochrysops piceatus Kerr, Macqueen & Sands, 1969 (Lepidoptera: Lycaenidae). Austral Entomology 60:461-472. 10.1111/aen.12556 PDF

Barrera, C. A.; Sosa-Calvo, J.; Schultz, T. R.; Rabeling, C.; Bacci, M., Jr. 2022. Phylogenomic reconstruction reveals new insights into the evolution and biogeography of Atta leaf-cutting ants (Hymenoptera: Formicidae). Systematic Entomology 47:13-35. 10.1111/syen.12513 PDF

Notes: Published "online early" 3 Sep 2021, without volume number or final pagination.

Espadaler, X. 1997. [Untitled. New species attributed to X. Espadaler.]. Pp. 272-280 in: Cagniant, H.; Espadaler, X. 1997. Les Leptothorax, Epimyrma et Chalepoxenus du Maroc (Hymenoptera: Formicidae). Clé et catalogue des espèces. Annales de la Société Entomologique de France (n.s.)33:259-284. PDF

Cagniant, H. 1997. [Untitled. New species attributed to H. Cagniant.]. Pp. 270-271 in: Cagniant, H.; Espadaler, X. 1997. Les Leptothorax, Epimyrma et Chalepoxenus du Maroc (Hymenoptera: Formicidae). Clé et catalogue des espèces. Annales de la Société Entomologique de France (n.s.)33:259-284. PDF

Heterick, B. E. 2021. A guide to the ants of Western Australia. Part I: Systematics. Records of the Western Australian Museum Supplement 86:245 pp. 10.18195/issn.0313-122x.86.2021.001-245 PDF

Radchenko, A. G.; Proshchalykin, M. Y. 2021. New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84:271-282. 10.3897/jhr.84.65238 PDF

Aswaj, P.; Sahanashree, R.; Udayakantha, W. S.; Aniruddha, M.; Priyadarsanan, D. R. 2021. Two new species of doryline ants (Hymenoptera, Formicidae) with 11-segmented antennae from India. ZooKeys 1056:59-72. 10.3897/zookeys.1056.68722 PDF

Yamane, S.; Hosoishi, S.; Syaukani, S. 2021. Taxonomic notes on rattan-inhabting ants of the genus Camponotus (Hymenoptera: Formicidae). Zoosystematica Rossica 30 (2):175-182. 10.31610/zsr/2021.30.2.175 PDF