Habrosyne plagiosa is a moth in the family Drepanidae first described by Frederic Moore in 1882.

The forewings are pinkish brown with an antemedial oblique pink line met below the costa by an oblique line from near the base.

The orbicular spot is represented by a speck and the reniform is elongate, with a dark outline.

There is also a faint waved double postmedial line filled in with bright chestnut towards the inner margin and a curved pink band from the apex to the outer angle.

This article on a moth of the subfamily Thyatirinae is a stub.