Phylogeny of the Onchocerca genus based on partitioned concatenated datasets of seven markers. Analysis is based on 12S rDNA, cytochrome oxidase subunit I (cox1), RNA polymerase II large subunit (rbp1), heat shock protein (hsp70), myosin heavy chain (myoHC), 18S rDNA and 28S rDNA sequences. Dirofilaria immitis and Dirofilaria repens were used as outgroups. The topology was inferred using Bayesian inference. Nodes are associated with Bayesian posterior probabilities based on one run of five million generations. The scale bar indicates the number of nucleotide substitutions. The host vertebrate family (or subfamily) for each filarial species is indicated using the specified symbols.