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Fig. 6. Stroke plane angle during normal (ßnorm; open symbols) and maximal hovering (ßmax; filled symbols) vs body mass (Mb) for Xylocopa varipuncta females. Model II regression: ßnorm=14.28–9.23Mb, r29=–0.49, P<0.005 (broken line); ßmax=10.16–10.01Mb, r28=–0.26, P=0.17.