Holarchaea novaeseelandiae is one of only two described species in the spider genus Holarchaea, and is endemic to New Zealand.
This spider is very small, less than 1.5 millimetres long. It is shiny black, brown, olive or buff in colour. The head region is clearly demarcated, has eight eyes and a few setae.
This spider occurs only in the forests of New Zealand. It lives in humid environments and has been found on moss, plant litter and ferns.
Under the New Zealand Threat Classification System, this species is listed as "Not Threatened".[1]