Diploplecta opaca is a species of Linyphiidae spider that is endemic to New Zealand.[1]
This species was described in 1988 by Alfred Frank Millidge from female and male specimens. The holotype is stored in Otago Museum.
The female is recorded at 1.6-1.8mm in length whereas the male is 1.55-1.6mm. This species has a brown carapace that is darker dorsally and laterally. The legs are yellow brown to orange. The abdomen is variable in colouration.
This species is only known from the South Island and Snares Island in New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".[2]