Figure 6. Boxplots illustrating variation in subdigital scale area and micro-ornamentation among the four focal lineages of Heteronotia binoei. The x-axis represents functional scale regions. Terrestrial lineages appear as warm colours (EA6 in yellow, Blencoe in red), while saxicoline lineages appear as cool colours (CC in blue, Paluma-W in purple). A, size-adjusted scale area of the terminal (FD) and subinflection (IN) scales. B, setae length (µm) across the five scale regions. C, setae spacing (µm) across the five scale regions. D, number of branching events of the setae on the FD and IN scales. The SEM image at the bottom illustrates the different functional scale regions of the toe (as in Fig. 2).