Evergestis pallidata
Here is another rather big species, which reaches a wingspan of 24 to 29 mm. The broad wings make it look like a small Geometer. Sometimes seen during day time, for it readily flees from its resting place. Regularly seen in the evening when it is attracted to light. Flies in July and August mainly. The larvae feed on Cruciferae. In the wild they prefer Winter-cress, but cultivars in gardens are also used to feed on. Locally a common species in England and and Ireland and in southern and western parts of Scotland. Also found in Northern America, where it is called the Purple-backed Cabbageworm. In Britain Evergestis pallidata apparently does not have a common name.