This monarch is endemic to Fatu Hiva in the Marquesas. Adults are glossy purplish-black and forage for insects and spiders in stream-centred valley forest.
Adult plumage is glossy purplish-black, with plush-like short feathers on the forehead.
The 2013 action plan records it in lowland valley forest with a mixture of native and introduced trees. It forages in both canopy and undergrowth for insects and spiders, and occasionally gecko tails.
An extinction-risk assessment has not been added yet.