Representation of the Isolation with Migration model generated by IMa3 and the IMfig programme for the six Lasiodiplodia species. The corresponding phylogenetic topology is presented in Suppl. material 2: fig. S7 (A and D), with phylogeny depicted as a set of hierarchical boxes. Ancestor boxes are located between their corresponding descendants. The width of each box is proportional to the estimated effective population size (Ne), with grey arrows indicating the 95% confidence interval of the Ne value. Green arrows show migration direction (*p < 0.05, **p < 0.01, * ** p < 0.001). Values above the green arrows represent unscaled migration rate parameters. The species codes are as follows: 0: L. brasiliense, 1: L. hormozganensis, 2: L. pseudotheobromae, 3: L. rubropurpurea, 4: L. theobromae, 5: L. iraniensis.