Pieris napi - Conservation status (Denmark): Least concern (LC) - Lowest risk (Does not qualify for a more at-risk category; widespread and abundant taxa are included in this category)

Grønåret kålsommerfugl (Pieris napi) 

The Green-veined white butterfly is common throughout Denmark, even on smaller islands. You can meet the butterfly in forests and in areas of nutritious and moist soil. It appears at the same time as Aurora in early May and can be seen until October.

Wikipedia 

Green-veined white

A  circumboreal species widespread across Europe and Asia, including the Indian subcontinent, Japan, the Maghreb and North America. It is found in meadows, hedgerows and woodland glades but not as often in gardens and parks like its close relatives the large and small whites, for which it is often mistaken.

Wikipedia