The larvae feed on "Rumex acetosella". The larvae feed on various species of "Rumex", such as "Rumex acetosa" and "Rumex acetosella". The larvae feed on "Rumex acetosa" and "Rumex acetosella". The larvae feed on "Rumex acetosella" and "Rumex acetosa". The larvae feed on "Rumex acetosa", "Rumex alpestris" and "Rumex acetosella".