the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Nematoda (phylum)
Secernentea (class)
Spirurida (order)
Onchocercidae (family)
[hide inferior taxa]
Dirofilaria immitis (species)
Litomosoides carinii (species)
Litomosoides sigmodontis (species)
Wuchereria bancrofti (species)