This leaf-warbler occurs only on Hainan Island, China. Its deep yellow underparts and white outer tail feathers are described in the species paper.
The underparts are deep yellow, and most of the outer tail feathers are white. The paper identifies this combination as distinctive.
During a post-breeding survey in late May 1989, birds were seen alone or in small flocks and sang sporadically.
An extinction-risk assessment has not been added yet.