Males have yellow underparts and head. The upperparts are duller, darker and greenish. Females are overall duller, with most of the underparts whitish. The lores, eye-ring and long decurved bill are blackish. It is 5.5 inches long.
The Hemignathus lucidus is classified as Critically Endangered (CR), facing an extremely high risk of extinction in the wild.
Nothing known about the Hemignathus lucidus