[1] This species was described as Korua wanganuiensis in 1945 by Valerie Todd from an immature male specimen collected near Whanganui.

[2] It was transferred to the Cantuaria genus in 1968 by Ray Forster who also described the female.

The holotype is stored at Otago Museum.

[1] The immature male (presumed to be subadult) is recorded at 15.5mm in length.

The abdomen has dark patches dorsally.