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Discover Life bee species guide and world checklist - Draft-54, website (version Draft-54)
Ascher, J. S. and J. Pickering. 01 February, 2020. Discover Life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). http://www.discoverlife.org/mp/20q?guide=Apoidea_species
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