Dialectica imperialella
 Dialectica imperialella is a moth of the Gracillariidae family. It is found from Denmark to the Pyrenees Italy and Romania and from Great Britain to Russia and Ukraine.Adults are on wing in May and June in one generation.The larvae feed on Buglossoides purpurocaerulea Lithospermum officinale Pulmonaria angustifolia Pulmonaria officinalis and Symphytum officinale. They mine the leaves of their host plant.