Pararchaea is a monotypic genus of shield spiders from New Zealand containing the single species, Pararchaea alba.
This genus was described in 1955 by Ray Forster from male and female specimens collected from Fiordland. The holotype is stored in Canterbury Museum.
The male is recorded at 1.54mm in length whereas the female is 1.74mm. This species has brown legs, a brown carapace and creamy white abdomen.
This genus is known from scattered localities in the South Island.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened.