This reference section belongs to Paratopula Wheeler, 1919
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Genus Paratopula references
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Bolton, 1988b: 125 (diagnosis, review of genus, all species revision, worker key, male key); Bolton, 1995a: 1051 (census); Eguchi et al., 2011: 22 (diagnosis, Vietnam synopsis); Xu & Xu, 2011: 595 (all species key); Luo & Guénard, 2017: 10 (all species key); Cantone, 2017: 225 (brief male diagnosis).