Protoerigone obtusa is a species of sheet weaver spider endemic to New Zealand.[1]
This species was described in 1979 by A.D Blest from male and female specimens. The holotype is stored in Otago Museum.
The male is recorded at 3.04mm in length whereas the female is 3.2mm. This species has a dark brown cephalothorax. The abdomen has dark and pale markings.
This species is only known from Stewart Island and the South Island of New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".[2]