Wheeler, 1922: 773; Bolton, 1995b: 334; Schmidt & Shattuck, 2014: 129 (species checklist); Fisher & Bolton, 2016: 370 (checklist).
Wheeler, 1922: 75 (diagnosis, all species key); Bolton & Fisher, 2008b: 37, 41 (diagnosis, all species revision, key); Schmidt & Shattuck, 2014: 127 (diagnosis, synopsis, distribution, ecology and behavior, phylogenetic and taxonomic considerations); Fisher & Bolton, 2016: 370 (diagnosis); Cantone, 2017: 270 (brief male diagnosis).
Extant: 5 valid species
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