Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Arthropoda (phylum)
8. Chelicerata (subphylum)
9. Arachnida (class)
10. Acari (subclass)

Anotations

Scope note:

Members of an order containing 3 families, 18 genera, and close to 900 species or arachnids that are external parasites (ectoparasites) that take nourishment from the blood of mammals, birds, reptiles, and amphibians. Ticks are important parasites of large wild and domestic animals and are also significant as carriers of serious diseases.