Figure 3.

Phylogenetic trees of nostril tick and other ticks of the genus Amblyomma from 12S ribosomal RNA (rRNA) (top) and nuclear intergenic transcribed spacer 2 (ITS2) (bottom) sequence alignments constructed by using the neighbor-joining method. All African Amblyomma species in Genbank were included, as were A. americanum and A. maculatum from Texas that were processed along with the nostril tick as positive controls. Alignment lengths were 319 and 1,015 nucleotide positions, respectively. GenBank accession numbers are shown in parentheses. Numbers above branches indicate bootstrap values based on 1,000 resamplings of the data. Scale bars indicate nucleotide substitutions per site.