Segestria saeva is a species of tube-dwelling spider endemic to New Zealand.

[1] This species was described in 1837 by Charles Walckenaer.

[1] This species is endemic to New Zealand.

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

[2]