Matachia australis is a species of Desidae spider that is endemic to New Zealand.

[1] This species was described by Ray Forster in 1970 from male and female specimens.

[1] The male is recorded at 6.8mm in length whereas the female is 7.05mm.

[1] Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".

[2] This article related to Desidae spiders is a stub.