Common on roadside verges, waste ground, marshes and river-banks throughout the British Isles, but not in the far north. In Hampshire and on the Isle of Wight local and seldom seen in numbers, despite being one of the easiest species of this group to identify. Wingspan 17-20 mm. Fairly unmistakable combination of large black costal blotch and adjacent rusty red elongate mark, and prominent apical dots. Larva feeds on flowers and leaves of Hemlock, living within a spun or rolled leaf.