Fig. 7. Maximal friction force generated by beetles Adalia bipunctata on test surfaces. (A) Comparison of raw data. (B) Comparison of normalised data. For each insect individual, the force produced on a plant substrate was compared with the force on glass, considered to be 100%. According to Dunn's test of multiple comparisons of means, performed after ANOVA, means with different letters differ significantly from each other.