Metriochroa fraxinella
Metriochroa fraxinella is a moth of the family Gracillariidae. It is known from Japan.
The wingspan is 5.2–8.2 mm. There are at least two generations per year in temperate Japan, because adults are on wing in summer and in autumn.
The larvae feed on Fraxinus species, Ligustrum japonicum, and Ligustrum micranthum. They mine the leaves of their host plant.