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Johnson, R. A. 2015. A taxonomic revision of South American species of the seed-harvester ant genus Pogonomyrmex (Hymenoptera: Formicidae). Part I. Zootaxa 4029 (1):1-142. 10.11646/zootaxa.4029.1.1 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

Johnson, R. A.; Borowiec, M. L.; Snelling, R. R.; Cole, A. C. 2022. A taxonomic revision and a review of the biology of the North American seed-harvester ant genus Veromessor (Hymenoptera: Formicidae: Myrmicinae). Zootaxa 5206 (1):1-115. 10.11646/zootaxa.5206.1.1 PDF

Johnson, R. A.; Cover, S. P. 2015. A taxonomic revision of the seed-harvester ant genus Pogonomyrmex (Hymenoptera: Formicidae) on Hispaniola. Zootaxa 3972 (2):231-249. PDF

Johnson, R. A.; Holbrook, C. T.; Strehl, C.; Gadau, J. 2007. Population and colony structure and morphometrics in the queen dimorphic harvester ant, Pogonomyrmex pima. . Insectes Sociaux 54:77-86. PDF

Johnson, R. A.; Moreau, C. S. 2016. A new ant genus from southern Argentina and southern Chile, Patagonomyrmex (Hymenoptera: Formicidae). Zootaxa 4139:1-31. 10.11646/zootaxa.4139.1.1 PDF

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Johnson, R. A.; Overson, R. P.; Wilson, E. O. 2024. E.O. Wilson’s last quest: are there ants on the Falkland Islands? Dugesiana 31 (2):125-128. PDF

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