Fig. 52 in Eggs, Ovariole Numbers, and Modes of Parasitism of Cleptoparasitic Bees, with Emphasis on Neotropical Species (Hymenoptera: Apoidea)

Fig. 52. Comparison frequency distributions for oocyte size (egg index) of cleptoparasitic bees that secrete their eggs in open host cells (dark outline), of those that introduce their eggs into cells that have already been sealed by the host (hatched), and of noneusocial, nonparasitic bees (gray). For further details, see text.