Fig. 11 in Widespread polytypic species or complexes of local species? Revising bumblebees of the subgenus Melanobombus world-wide (Hymenoptera, Apidae, Bombus)

Fig. 11. Numbers of unique COI haplotypes represented per species (y-axis, log scale) plotted against range size per species (x-axis, log scale). Unique COI haplotypes are listed in Fig. 10 and range size is measured as the number of large equal-area grid cells (611 000 km²) with records (Williams 1998).