Ariadna bellatoria is a species of tube-dwelling spider endemic to New Zealand.

[1] This species was described in 1917 by Raymond Dalmas from a single female specimen collected in Taumaranui.

[1] This speciesis only known from Taumaranui, New Zealand.

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

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