Fig. 5
Frequency histograms for Trithemis forewing and hindwing shape distinctions for species preferring different landscape and water body habitats as assessed from the landmark-semilandmark coordinate datasets. Note that, despite the broad ranges of shape overlap, a clear distinction exists between the central tendencies of these habitat-based wing shape groups. Statistical comparison of the between-groups separation relative to within-groups dispersion using a bootstrapped version of Hotelling's T2 test indicate that all four comparisons are significant at well beyond the p = 0.95 confidence level