Stigmella tricentra is a moth of the family Nepticulidae. It was first described by Edward Meyrick in 1889. This species is endemic to New Zealand and is found in both the North and South Islands. This species inhabits the margins of native forest as well as lowland shrublands where its larval host can be found. Larvae are leaf miners and feed on Helichrysum lanceolatum. Adults are on the wing in the wild in March and October. It is likely that this species has two generations in a year.

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