Prophantis smaragdina is a species of moth of the family Crambidae described by Arthur Gardiner Butler in 1875. It is found in subtropical Africa south of the Sahara.
The larvae of this species infest coffee beans. Known food plants of this species are: Rubiaceae (Coffea arabica, Ixora coccinea and Gardenia sp.), Verbenaceae (Duranta plumieri), and Menispermaceae (Triclisia sp.).