Silver-Y moth
migrating back to southern Europe for the winter months. The moths can fly 2,000 to 2,500 km. In temperate climates, the species produces one to two overlapping [...] thin. The moths fly during the day as well as at night, often in large swarms. They fly rapidly from flower to flower, often resting with their wings folded [...] overlapping generations, and it is the second generation that inflicts much damage to agricultural crops, particularly brassicas, from August onward. The silver-Y