[1] The currently accepted genera are Antricola, Argas, Nothoaspis, Ornithodoros, and Otobius.

[1] The Argasidae are very common in South Asia, along with 96 other species of ticks, making South Asia the region with the highest biodiversity of ticks worldwide.

[2] Soft ticks are resistant to desiccation and can live for several years in arid conditions.

[3] The gnathosoma (or capitulum, the mouthparts-bearing structure) is located on the underside of the animal's body and is not readily visible,[3] while in the Ixodidae, the gnathosoma projects forward from the body.

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