Ariamnes triangulatus is a species of tangle web spider endemic to New Zealand.Urquhart, A. T. (1887). On new species of Araneida. Transactions and Proceedings of the New Zealand Institute 19: 72-118, pl. 7-8.
Taxonomy This species was described in 1887 by Arthur Urquhart from male and female specimens.
Distribution This species is only known from Te Karaka, New Zealand.
Conservation status 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".
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