This reference section belongs to Harpagoxenus Forel, 1893
Genus Harpagoxenus catalogues
Mayr, 1863a: 457; Emery & Forel, 1879: 457 (Europe); Dalla Torre, 1893: 63; Emery, 1924f: 265; Smith, 1951c: 822 (North America); Smith, 1979: 1398 (North America); Bolton, 1995b: 211.