Figure 2: Allometric pattern in each trait for each class (nanitics (left circle), other workers (central squares), and queens (right triangles)). Significant differences among the classes (the compared class is shown with horizontal black bars) were tested by ANCOVA. The stars () represent a statistically significant difference in the slopes after Bonferroni correction for multiple comparisons among the classes (the significance level is in this case). The fact that the queens are a distinct caste is apparent; the queen class was removed from the calculations excluding the analysis for AF, in which the allometric slope for the queens is not different from those of the other two classes.