Matachia livor is a species of Desidae spider that is endemic to New Zealand.
This species was first described by Arthur Urquhart in 1893 from a male specimen. It has undergone numerous revisions. The holotype is stored in Canterbury Museum.
The male is recorded at 7.66mm in length whereas the female is 7.20mm. The abdomen has a prominent chevron pattern dorsally.
This species is widespread throughout the North Island of New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".