Fig. 3.

Differentiation between the orchid mimics and their sympatric female bee models in emission patterns of the three key odor compounds for the attraction of C. cunicularius males. (A) Mean (± SE) absolute amounts in individual odor extracts (in ng). (B) Mean (± SE) relative proportions (in percentage of the total odor blend). The analysis shows that there is no significant difference in the absolute amounts (in ng) of the three key odor compounds between sympatric orchid mimics and their female bee models, whereas the proportion patterns of these compounds (in percentage of the total odor blend) differ significantly between the models and the mimics. Mann–Whitney U test (α = 0.05), different letters on top of error bars indicate significant differences in odor emission; the numbers of samples analyzed are listed under the columns.