Otagoa chathamensis is a species of Toxopidae spider that is endemic to New Zealand.Forster, R. R. (1970). The spiders of New Zealand. Part III. Otago Museum Bulletin 3: 1-184.
Taxonomy This species was described by Ray Forster in 1970 from female specimens. The holotype is stored in the Otago Museum.
Description The female is recorded at 9.02mm in length. The carapace is coloured reddish brown anteriorly and paler posteriorly. The legs are pale brown. The abdomen is shaded grey dorsally. and has a pale chevron pattern.
Distribution This species is only known from the Chatham Islands in New Zealand. It occurs along the coast.
Conservation status Under the New Zealand Threat Classification System, this species is listed as "Naturally Uncommon" with the qualifiers of "Range Restricted".
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