Koa / Hawaiian Blue (Udara blackburni)
Blue Top Wings
Copyright: Nathan Yuen
One of only two native butterflies in Hawaii, the Koa is both special and unforgettable. It’s undeniably cute, with a one-inch wingspan, fuzzy body, and big eyes. You will immediately notice the dual effect of its iridescent wing colors, blue on top and aquamarine beneath, with the wings usually held upright when it lands.
If you get close enough, you will see its whimsical black-and-white striped antennae. Both the adult and caterpillar are known for feeding on the koa tree, though they can feed on other native plants as well.
Koa / Hawaiian Blue Life Cycle
Koa Caterpillar
Copyright: Nathan Yuen
Aquamarine Bottom Wings
Copyright: Graham Burdekin
Iridescent Scales on Wings Reflecting Light
Copyright: Nathan Yuen
Coiled-up Proboscis
Copyright: Nathan Yuen
Eyes and Antennae
Copyright: Nathan Yuen
Hawaiian Blue Resting on Leaf
Copyright: Graham Burdekin
Iridescent Blue Top Wing
Copyright: Nathan Yuen
Plants That Attract The Koa / Hawaiian Blue
Host Plants: (What is this?)
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Nectar Plants: (What is this?)
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Facts And Information
Family: Gossamer-wings (Lycaenidae)
Subfamily: Blue (Polyommatinae)
Average Wingspan: 3/4 in. to 1 in.
Habitat: .
Butterfly Flight Range
Note: Map represents approximate butterfly flight range.
