The butterfly can be distinguished by the white colour with small black dots on its wings. They are distinguished from the smaller size and lack of the black band at the tip of their forewings. It is widespread and populations are found across Europe, North Africa, Asia, and Great Britain. It has also been accidentally introduced to North America, Australia and New Zealand.
The caterpillar of this species is seen as a pest for commercial agriculture. Often referred to as the "imported cabbageworm" they are a serious pest to cabbage and other mustard family crops.
This post is part of the Saturday Critters meme,
and also part of the Camera Critters meme,
and also part of the Macro Monday meme.