This tiny moth is well-known for its migratory tendencies. Sometimes many thousands can appear during the night at coastal migration watch-points.
Two or more generations occur between May and September, and the larvae feed on the leaves of certain types of vegetables.
Adult moths are nocturnal, 8mm in length, grey/brown, long and thin in shape with diamond markings on their backs.
This tiny moth at rest is about as long as a ladybird.