Taxonomy explainerWorldwide

How are ticks classified?

Ticks are arachnids in the subclass Acari and order Ixodida. Living ticks are grouped into the hard ticks, soft ticks and the small family Nuttalliellidae.

Reviewed by VuxLore® Knowledge Team For Everyone

Short answer

Ticks are arachnids in the subclass Acari and order Ixodida. Living ticks are grouped into the hard ticks, soft ticks and the small family Nuttalliellidae.

At a glance

Taxonomy organises ticks by shared anatomy and evolutionary relationships; it is more precise than informal names such as wood tick or cattle tick.

Key takeaways

• Ticks are arachnids, not insects.

• Hard and soft ticks are different families.

• Scientific names support worldwide clarity.

From animals to species

Ticks belong to Animalia, Arthropoda and Arachnida, within the diverse mite-and-tick group Acari. The order Ixodida contains the recognised tick families.

Why classification changes

Researchers compare anatomy, life history and genetic evidence. As evidence improves, relationships or names can be revised, so identification resources should state their date and taxonomic authority.