Cantuaria vellosa is a species of trapdoor spider endemic to New Zealand.

[1] This species was described in 1968 by Ray Forster from female and male specimens collected in Otago.

[1] The holotype was found in a cliff near sea level.

The abdomen is creamy brown laterally and ventrally.

[1] Under the New Zealand Threat Classification System, this species is listed as Data Deficient with the qualifiers of "Data Poor: Size", "Data Poor: Trend" and "One Location".