Unrooted trees of mitochondrial and nuclear genes. Unrooted Bayesian trees based on (a) nucleotide sequence data and (b-d) hybridization data (genes were assigned either present, slightly divergent, or highly divergent). (a) Unrooted tree based on the partial nucleotide sequence of the mitochondrial genes cox1 and cytb. (b-d) Divergence as inferred from GACK of (b) all genes, (c) only non-annotated genes, and (d) only annotated genes. All trees were generated using Mr. Bayes as described in the methods section.