This reference section belongs to Hagensia Forel, 1901
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Genus Hagensia references
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Emery, 1911e: 69 (Megaponera (Hagensia) diagnosis); Arnold, 1926: 203 (South Africa species key); Arnold, 1951: 53 (all species key); Schmidt & Shattuck, 2014: 89 (diagnosis, synopsis, distribution, ecology and behavior, phylogenetic and taxonomic considerations); Fisher & Bolton, 2016: 286 (diagnosis); Cantone, 2017: 259 (brief male diagnosis).