Porphyrosela dismochrysa is a moth of the family Gracillariidae. It is known from the Australian states of New South Wales and South Australia. The larvae feed on Hardenbergia species (including Hardenbergia ovata), Kennedia nigricans and Meibomia viridiflora. They probably mine the leaves of their host plant. This species was first described by Oswald Bertram Lower in 1897. References Lithocolletinae Moths described in 1897 Moths of Australia Taxa named by Oswald Bertram Lower