Fig. 5
Body size divergence. When populations differed in body width (low and moderate range overlap comparisons) larger bodied populations were associated with restios with thicker culms. Panels correspond to comparisons in Fig. 3. Names on the x axes correspond to the restio species that insects were collected from. Boxplots (with outliers) are shown with hinges corresponding to 25th and 75th percentiles, whiskers correspond to the highest and lowest values within interquartile ranges. Median thickness of restio culm thickness at the apex and base of culms are shown for reference, but culm thickness data were analysed separately (see Additional file 2: Figure S1). Note that the base of W. incurvata culms (indicated off-scale as 5.55 mm) were much thicker than those of other restio species. Host effects from two way ANOVAs are shown, significance is indicated by *** (P < 0.001). Difference between sexes and ecotypes not sharing letters are significant below P = 0.05, as determined by Tukey post hoc tests. Sample sizes are shown below each box