Morphological trends in the Trimeresurus albolabris complex. Contours were generated in ArcGIS Pro v3.2, interpolated using ordinary kriging using group centroids from a canonical variate analysis including all character types except colour pattern. Country boundaries (in black) and ocean vector layers were downloaded from Natural Earth (naturalearthdata.com) at 1:10 m resolution. Note that the extent of contoured area does not reflect the range of the species. Characters that contribute to the canonical variates vary slightly between males and females and are listed in Table 4.