Fig. 1.

Maximum clade credibility tree generated from BEAST v2.4.3 (Bouckaert et al. 2014) on concatenated gene set excluding wsp. Gamma time-reversible nucleotide evolution model was used with 4 gamma categories. All other priors were left as per the default settings. Ten million generations were run, sampling every 1000 generations. The maximum clade credible tree was then calculated in TreeAnnotator v2.4.3 (Bouckaert et al. 2014) after removing the first 20% of the run as burn-in, producing median node heights. The posterior probability value is shown at each node. The known supergroups are labelled (coloured bars and upper-case letters) (colour figure online)