Plectophanes archeyi is a species of Cycloctenidae spider endemic to New Zealand.
This species was described in 1964 by Ray Forster from female specimens. It was most recently revised in 1979. The holotype is stored in Canterbury Museum.
The female is recorded at 5.94mm. This species has a dark brown carapace. The abdomen is pale yellow with dark markings dorsally.
This species is only known from Canterbury, New Zealand.
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".