Elachista regificella

Description

Elachista regificella is a moth of the family Elachistidae. It is found in Great Britain and Romania. It might also occur in the Netherlands. The wingspan is about 8 millimetres (0.31 in). Adults are on wing in July in one generation per year. The larvae feed on Luzula sylvatica. They mine the leaves of their host plant. Young larvae create a very narrow mine running parallel to the midrib. The mine then suddenly widens to almost the full width of the leaf. The frass is deposited in the transition area between the mine types. Pupation takes place outside of the mine. They are greenish black with a pale honey coloured head. Larvae can be found from autumn to mid June of the following year.