Figure 28 in The bibliography of and taxa proposed by Charles D. Michener

Figure 28. Cover of the first edition of Michener's acclaimed, The Bees of the World (2000, Johns Hopkins University Press). Representing the culmination of his lifelong efforts toward refining bee classification, the appearance of this unequaled, encyclopedic tome was as transformational to melittology as was Mich's 1944 monograph, if not more so given its greater scope.