Lamina minor is a species of Toxopidae spider that is endemic to New Zealand.
This species was described by Ray Forster in 1970 from male and female specimens. The holotype is stored in Otago Museum.
The male is recorded at 2.4mm in length whereas the female is 3.06mm. When alive, the spider is bright green in colour.
This species is only known from Otago, New Zealand.
Under the New Zealand Threat Classification System, this species is listed as "Naturally Uncommon" with the qualifier of "Range Restricted".