Meringa australis is a species of Physoglenidae spider endemic to New Zealand.

[1] This species was described in 1990 by Ray Forster from male and female specimens.

[1] This species is only known from Big South Cape Island, New Zealand.

[1] Under the New Zealand Threat Classification System, this species is listed as "Naturally Uncommon" with the qualifier of "Island Endemic" and "One Location".

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