| Udara blackburnii | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Family: | Lycaenidae |
| Genus: | Udara |
| Species: | U. blackburnii |
| Binomial name | |
| Udara blackburnii (Tuely, 1878) |
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| Synonyms | |
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The Blackburn's Bluet, Green Hawaiian Blue or Hawaiian Blue (Udara blackburnii) is a butterfly in the Lycaenidae family. It is endemic to Hawaii.
The wingspan is 22-29 mm.
The larvae feed on Acacia species (including Acacia koa), Pithecellobium, Samanea saman, Perottetia sandwicensis, Dodonaea viscose and Pipturus albidus.