Sequence heterogeneity of the 12S and 16S rDNA genes of bat tick isolates. Genotypes marked with capital letter are shown next to the relevant tick species. Below each genotype the distance from the most important collection site of I. ariadnae is indicated. Data are separated by dashed line according to genotypes (12S or 16S) and tick species. The number of nucleotides differing between pairs of genotypes is marked with yellow, whereas inter-specific differences with orange background. Sequencing was successful for both genes in case of all 10 isolates, but on the diagram only differences are shown.