Stigmella platina is a species of moth in the family Nepticulidae. It was first described by Hans Donner and Christopher Wilkinson in 1989. It is endemic to New Zealand and has been observed in both the North and South Islands at Arthur's Pass and Kapuni Valley in Egmont National Park. The larvae are leaf miners and the likely larval host plant is Brachyglottis elaeagnifolia. Adults are on the wing in January and February.

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