Fig. 11

Example of embedded, paired comparison within Trithemis species’ hindwings, including within landscape group contrasts (vertical arrows), within water-body group contrasts (horizontal arrows) and between landscape and water-body group contrasts (diagonal arrows). The existence of a multitude of paired comparisons such as these, if they are used as the basis for a morphological assessment of within-group similarity and between-group difference can, in many instances, counteract the effect of inherently small sample sizes. However, in order for this strategy to produce results that can be used with confidence care must be taken either to obtain a representative sample of morphological variation and to be circumspect in interpreting the results of data analyses