This reference section belongs to Harpagoxenus Forel, 1893
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Genus Harpagoxenus references
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Mayr, 1865: 23 (diagnosis); André, 1882d: 279 (Europe & Algeria species); Emery, 1924f: 265 (diagnosis); Creighton, 1950a: 284 (Nearctic species key); Bernard, 1967a: 223 (diagnosis); Radchenko, 1994b: 112 (South Siberia species key); Bolton, 1995a: 1049 (census); Xu, 2012a: 21 (all species key); Cantone, 2017: 202 (brief male diagnosis).