Mompha propinquella is a moth in the family Momphidae found in Europe.
The wingspan is 10–12 mm.[1] Adults are on wing from the end of June to mid-September in one generation per year.
The larvae feed on great willowherb (Epilobium hirsutum) and broad-leaved willowherb (Epilobium montanum), mining the leaves of their host plant.[2] The species overwinters in the larval stage.[3]
It is found in most of Europe, except the Mediterranean islands and most of the Balkan Peninsula.