Cantuaria stephenensis is a species of trapdoor spider endemic to New Zealand.[1]
This species was described in 1968 by Ray Forster from female specimens collected on Stephen Island. The holotype is stored at Canterbury Museum.
The female is recorded at 15mm in length. The carapace and legs are orange brown. The abdomen has a chevron pattern dorsally.
This species is only known from Stephen Island in New Zealand.
Under the New Zealand Threat Classification System, this species is listed as Data Deficient with the qualifiers of "Data Poor: Size" and "Data Poor: Trend".[2]