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Wingspan 13-15 mm.
DescripttionA small moth is well-known for its migratory tendencies. Sometimes many thousands can appear during the night at coastal migration watch-points . It has a white band with two diamong like patterns on its back.
In all types of habitat in Britain becoming established occasionally reaching plague proportions on farms where cabbages are grown.
Flight PeriodMay and September Two or more generations occur , and the larvae feed on the leaves of certain types of cruciferous crops / vegetables as well as weeds.The moth has a short life cycle.